Intel Responds to Reboot Issues with Meltdown and Spectre Updates

Subject: Processors | January 18, 2018 - 01:17 PM |
Tagged: update, spectre, security, restart, reboot, processor, patch, meltdown, Intel, cpu

The news will apparently get worse before it gets any better for Intel, as the company updated their security recommendations for the Spectre/Meltdown patches for affected CPUs to address post-patch system restart issues. Specifically, Intel notes that issues may be introduced in some configurations with the current patches, though the company does not recommend discontinued use of such updates:

" Intel recommends that these partners, at their discretion, continue development and release of updates with existing microcode to provide protection against these exploits, understanding that the current versions may introduce issues such as reboot in some configurations".

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Image credit: HotHardware

The recommendation section of the security bulletin, updated yesterday (January 17, 2018), is reproduced below:

  • Intel has made significant progress in our investigation into the customer reboot sightings that we confirmed publicly last week
  • Intel has reproduced these issues internally and has developed a test method that allows us to do so in a predictable manner
  • Initial sightings were reported on Broadwell and Haswell based platforms in some configurations. During due diligence we determined that similar behavior occurs on other products including Ivy Bridge, Sandy Bridge, Skylake, and Kaby Lake based platforms in some configurations
  • We are working toward root cause
  • While our root cause analysis continues, we will start making beta microcode updates available to OEMs, Cloud service providers, system manufacturers and Software vendors next week for internal evaluation purposes
  • In all cases, the existing and any new beta microcode updates continue to provide protection against the exploit (CVE-2017-5715) also known as “Spectre Variant 2”
  • Variants 1 (Spectre) and Variant 3 (Meltdown) continue to be mitigated through system software changes from operating system and virtual machine vendors
  • As we gather feedback from our customers we will continue to provide updates that improve upon performance and usability

Intel recommendations to OEMs, Cloud service providers, system manufacturers and software vendors

  • Intel recommends that these partners maintain availability of existing microcode updates already released to end users. Intel does not recommend pulling back any updates already made available to end users
  • NEW - Intel recommends that these partners, at their discretion, continue development and release of updates with existing microcode to provide protection against these exploits, understanding that the current versions may introduce issues such as reboot in some configurations
  • NEW - We further recommend that OEMs, Cloud service providers, system manufacturers and software vendors begin evaluation of Intel beta microcode update releases in anticipation of definitive root cause and subsequent production releases suitable for end users

Intel recommendations to end users

  • Following good security practices that protect against malware in general will also help protect against possible exploitation until updates can be applied
  • For PCs and Data Center infrastructure, Intel recommends that patches be applied as soon as they are available from your system manufacturer, and software vendors
  • For data center infrastructure, Intel additionally recommends that IT administrators evaluate potential impacts from the reboot issue and make decisions based on the security profile of the infrastructure

Intel has worked with operating system vendors, equipment manufacturers, and other ecosystem partners to develop software updates that can help protect systems from these methods. End users and systems administrators should check with their operating system vendors and apply any available updates as soon as practical.

The full list of affected processors from Intel's security bulletin follows:

  • Intel® Core™ i3 processor (45nm and 32nm)
  • Intel® Core™ i5 processor (45nm and 32nm)
  • Intel® Core™ i7 processor (45nm and 32nm)
  • Intel® Core™ M processor family (45nm and 32nm)
  • 2nd generation Intel® Core™ processors
  • 3rd generation Intel® Core™ processors
  • 4th generation Intel® Core™ processors
  • 5th generation Intel® Core™ processors
  • 6th generation Intel® Core™ processors
  • 7th generation Intel® Core™ processors
  • 8th generation Intel® Core™ processors
  • Intel® Core™ X-series Processor Family for Intel® X99 platforms
  • Intel® Core™ X-series Processor Family for Intel® X299 platforms
  • Intel® Xeon® processor 3400 series
  • Intel® Xeon® processor 3600 series
  • Intel® Xeon® processor 5500 series
  • Intel® Xeon® processor 5600 series
  • Intel® Xeon® processor 6500 series
  • Intel® Xeon® processor 7500 series
  • Intel® Xeon® Processor E3 Family
  • Intel® Xeon® Processor E3 v2 Family
  • Intel® Xeon® Processor E3 v3 Family
  • Intel® Xeon® Processor E3 v4 Family
  • Intel® Xeon® Processor E3 v5 Family
  • Intel® Xeon® Processor E3 v6 Family
  • Intel® Xeon® Processor E5 Family
  • Intel® Xeon® Processor E5 v2 Family
  • Intel® Xeon® Processor E5 v3 Family
  • Intel® Xeon® Processor E5 v4 Family
  • Intel® Xeon® Processor E7 Family
  • Intel® Xeon® Processor E7 v2 Family
  • Intel® Xeon® Processor E7 v3 Family
  • Intel® Xeon® Processor E7 v4 Family
  • Intel® Xeon® Processor Scalable Family
  • Intel® Xeon Phi™ Processor 3200, 5200, 7200 Series
  • Intel® Atom™ Processor C Series
  • Intel® Atom™ Processor E Series
  • Intel® Atom™ Processor A Series
  • Intel® Atom™ Processor x3 Series
  • Intel® Atom™ Processor Z Series
  • Intel® Celeron® Processor J Series
  • Intel® Celeron® Processor N Series
  • Intel® Pentium® Processor J Series
  • Intel® Pentium® Processor N Series

We await further updates and developments from Intel, system integrators, and motherboard partners.

Source: Intel

Gaming in isolation, complete Meltdown or not?

Subject: Processors | January 8, 2018 - 07:24 PM |
Tagged: meltdown, security, linux, nvidia

Thanks to a wee tech conference going on, performing a wide gamut of testing of the effect of the Meltdown patch is taking some time.  Al has performed benchmarks focusing on the performance impact the patch has on your storage subsystem, which proved to be very minimal.  Phoronix are continuing their Linux testing, the latest of which focuses on the impact the patch has on NVIDIA GPUs, specifically the GTX 1060 and GTX 1080 Ti.  The performance delta they see falls within measurement error levels; in other words there is no measurable impact after the patch was installed.  For now it seems the most impact this patch has is for scientific applications and hosting providers which use select high I/O workloads and large amounts of virtual machines.  For now the cure to Meltdown is nowhere near as bad as what it protects against for most users ... pity the same cannot be said for Spectre.

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"Earlier this week when news was still emerging on the "Intel CPU bug" now known as Spectre and Meltdown I ran some Radeon gaming tests with the preliminary Linux kernel patches providing Kernel Page Table Isolation (KPTI) support. Contrary to the hysteria, the gaming performance was minimally impacted with those open-source Radeon driver tests while today are some tests using the latest NVIDIA driver paired with a KPTI-enabled kernel."

Here are some more Processor articles from around the web:

Processors

Source: Phoronix

CES 2018: AMD Drops Ryzen CPU Prices By Up to 30 Percent

Subject: Processors | January 8, 2018 - 12:00 AM |
Tagged: Threadripper, ryzen, processor, price cut, cpu, CES 2018, CES, amd

AMD announced today a price drop for most of its Ryzen processor lineup, making the company's multi-core-focused parts even more competitive to Intel in terms of cost-to-performance. While not every Ryzen and Threadripper processor is seeing a price reduction, many parts are being reduced by up to 30 percent.

Processor Cores/Threads Previous SEP New SEP Percent Reduction
Threadripper 1950X 16/32 $999 $999 N/A
Threadripper 1920X 12/24 $799 $799 N/A
Threadripper 1900X 8/16 $549 $449 -18.2%
Ryzen 7 1800X 8/16 $499 $349 -30.1%
Ryzen 7 1700X 8/16 $399 $309 -22.5%
Ryzen 7 1700 8/16 $329 $299 -9.1%
Ryzen 5 1600X 6/12 $249 $219 -12.0%
Ryzen 5 1600 6/12 $219 $189 -13.7%
Ryzen 5 1500X 4/8 $189 $174 -7.9%
Ryzen 5 2400G 4/8   $169 N/A
Ryzen 3 1300X 4/4 $129 $129 N/A
Ryzen 3 2200G 4/4   $99 N/A

Note also in the price chart the new "G" series Ryzen APUs with integrated Radeon Vega graphics. Check pcper.com for more info on this new part.

Some of the new prices are already reflected, and in some cases reduced further, at retailers like Amazon.

To determine the new prices, AMD performed comparative price testing with its online retail partners last quarter, and determined that these new prices were the best balance between performance and value.

With second generation Ryzen processors not scheduled to launch until later this spring, the price drop not only helps AMD move existing inventory, it also keeps the company at the top of enthusiasts' minds in the midst of the fallout around the recent processor security issues, one of which primarily affects Intel processors.

Source:

CES 2018: AMD Announces 2nd Generation Ryzen CPUs for April, Threadripper for 2H 2018

Subject: Processors | January 8, 2018 - 12:00 AM |
Tagged: Zen+, Zen, ryzen 2000, ryzen, CES 2018, CES, amd

During AMD’s CES 2018 Tech Day, CEO Lisa Su announced the plans for the second-generation Ryzen processor roll-out in April. This is the revised design that has been rumored for months, with a process technology change and slight tweaks to features.

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Details are expectantly short, but what we know is that these parts will move from a 14nm process technology to 12nm from GlobalFoundries. AMD is calling the design “Zen+” and this is NOT Zen 2 – that is coming next year. You should expect higher clocks for Ryzen 2000-series processors and improvements to Precision Boost that will enable more consistent and gradual clock speed shifts in workloads of interesting like gaming.

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Also on the roadmap now are updated Threadripper processors with the same “Zen+” enhancements, coming out in 2H of 2018.

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The great news for enthusiasts that have already bought into AMD’s current generation platform is existing motherboards will support this processor update, as long as you have the associated BIOS. Motherboards are already being updated today for the channel (to support the Ryzen APU launch) so there should be little concern with compatibility come April.

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However, there IS a new chipset coming with “Zen+”, the AMD X470. Information on it is also slim, but it includes some optimizations and fixes. AMD had growing pains with the initial set of motherboard releases including power concerns and routing issues, both of which are addressed with the new design.

That’s all we know for now, but I am excited to get my hands on the Ryzen second-generation processors this spring to see how much performance and behavior has changed. Intel has definitely changed the landscape since Ryzen’s first release in March of 2017, so enthusiasts should welcome the back and forth competition cycle once again.

Source: PCPer

CES 2018: AMD Ryzen Desktop CPU with Vega Graphics Coming Feb 12

Subject: Processors | January 8, 2018 - 12:00 AM |
Tagged: Zen, Vega, ryzen, CES 2018, CES, APU, amd, 2400G, 2200G

Though AMD might not use the term APU anymore, that’s what we are looking at today. The Ryzen + Vega processor (single die implementation, to be clear) for desktop solutions will begin shipping February 12 and will bring high-performance integrated graphics to low cost PCs. Fully titled the “AMD Ryzen Desktop Processor with Radeon Vega Graphics”, this new processor will utilize the same AM4 socket and motherboards that have been shipping since March of 2017. Finally, a good use for those display outputs!

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Though enthusiasts might have little interest in these parts, it is an important step for AMD. Building a low-cost PC with a Ryzen CPU has been difficult due to the requirement of a discrete graphics card. Nearly all of Intel’s processors have integrated graphics, and though we might complain about the performance it provides in games, the truth is that the value of not needing another component is crucial for reducing costs.

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Without an APU that had both graphics and the company’s greatly improved Zen CPU architecture, AMD was leaving a lot of potential sales on the table. Also, the market for entry-level gaming in small form factor designs is significant.

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Two models will be launching: the Ryzen 5 2400G and Ryzen 3 2200G. Clock speeds are higher than what exists on the Ryzen 5 1400 and Ryzen 3 1200 and match the core and thread count. The 2400G includes 11 Compute Units (704 stream processors) and the 2200G has 8 CUs (512 stream processors). The TDP of both is 65 watts.

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The pricing configuration gives AMD some impressive placement. The $169 Ryzen 5 2400G will offer much better graphics performance than the $30 more expensive Core i5-8400 (based on current pricing) and has equivalent performance to the $100+ higher Core i5-8400 and NVIDIA GT 1030 discrete solution.

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When looking at CPU performance, the new Ryzen processors offer higher scores than the units they are replacing. They do this while adding Vega graphics capability and matching or lower prices.

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AMD even went as far to show the overclocking headroom that the Ryzen APU can offer. During an on-site demo we saw the Ryzen 5 2400G improve its 3DMark score by 39% with memory frequency and GPU clock speed increases. Moving the GPU clock from ~1100 MHz to 1675 MHz will mean a significant increase in power consumption, and I do question the size of the audience that wants to overclock an APU. Still – cool to see!

The Ryzen CPU with Vega graphics is a product we all expected to see, it’s the first perfect marriage of AMD’s revitalized CPU division and its considerable advantage in integrated graphics. It has been a long time since one of AMD’s APUs appeared interesting to me and stoked my desire to build a low-cost, mainstream gaming build. Looks for reviews in just a few short weeks!

Source: PCPer

Pardon the system interruption, more on the effects of the PTI patch

Subject: Processors | January 4, 2018 - 01:15 PM |
Tagged: linux, spectre, meltdown, Intel

As the Linux patch for the Intel kernel issue is somewhat more mature than the Windows patch which was just pushed out, and because the patch may have more impact on hosting solutions than gaming machines, we turn to Phoronix for test results.  Their testing overview looks at both Intel and AMD, as the PTI patch can be installed on AMD systems and it is not a bad idea to do so.  The results are somewhat encouraging, CPUs with PCID (Process Context ID) such as Sandy Bridge and newer seem to see little effect from the patch, network performance seems unchanged and Xeon's see far less of an effect across the board than desktop machines.  That is not to say there is no impact whatsoever, in synthetic benchmarks which make frequent system calls or depend on optimized access to the kernel they did see slowdowns; thankfully those workloads are not common for enthusiast software.   Expect a lot more results from both Windows and Linux over the coming weeks.

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"2018 has been off to a busy start with all the testing around the Linux x86 PTI (Page Table Isolation) patches for this "Intel CPU bug" that potentially dates back to the Pentium days but has yet to be fully disclosed. Here is the latest."

Here are some more Processor articles from around the web:

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Source: Phoronix

Meltdown and Spectre Security Vulnerability Impacts Intel most, but AMD, Arm as well

Subject: Processors | January 3, 2018 - 08:17 PM |
Tagged: Intel, amd, arm, meltdown, spectre, security

The following story was originally posted on ShroutResearch.com.

UPDATE 1 - 8:25pm

Just before the closing bell on Wednesday, Intel released a statement responding to the security issues brought up in this story. While acknowledging that these new security concerns do exist, the company went out of its way to insinuate that AMD, Arm Holdings, and others were at risk. Intel also states that performance impact on patched machines “should not be significant and will be mitigated over time.”

Intel’s statement is at least mostly accurate though the released report from the Google Project Zero group responsible for finding the security vulnerability goes into much more detail. The security issue concerns a feature called “speculative execution” in which a computer tries to predict work that will be needed beforehand to speed up processing tasks. The paper details three variants of this particular vulnerability, the first of which applies to Intel, AMD, Arm, any nearly every other modern processor architecture. This variant is easily patched and should have near-zero effect on performance.

The second variant is deeply architecture specific, meaning attackers would need a unique code for each different Intel or AMD processor. This example should be exceedingly rare in the wild, and AMD goes as far as to call it a “near-zero” risk for systems.

The third is where things are more complex and where the claim that AMD processors are not susceptible is confirmed. This one is the source of the leaks and information that filtered out and was the target of the information for the story below. In its statement, AMD makes clear that due to architectural design differences on its products, past and modern processors from its family are not at risk.

The final outlook from this story looks very similar to how it did early on Wednesday though with a couple of added wrinkles. The security report released by Project Zero indicates that most modern hardware is at risk though to different degrees based on the design of the chips themselves. Intel is not alone in this instance, but it does have additional vulnerabilities that other processor designs do not incur. To insinuate otherwise in its public statement is incorrect.

As for performance impact, most of the initial testing and speculation is likely exaggerating how it will change the landscape, if at all. Neither Intel nor AMD see a “doomsday” scenario of regressing computing performance because of this security patch.

At the end of 2017, Intel CEO Brian Krzanich said his company would be going through changes in the New Year, becoming more aggressive, and taking the fight to its competitors in new and existing markets. It seems that BK will have his first opportunity to prove out this new corporate strategy with a looming security issue that affects nearly 10 years of processors.

recently revealed hardware bug in Intel processors is coming to light as operating system vendors like Microsoft and the Linux community scramble to update platforms to avoid potential security concerns. This bug has been rumored for some time, with updates to core Linux software packages indicating that a severe vulnerability was being fixed, but with comments redacted when published. Security flaws are often kept secret to avoid being exploited by attackers until software patches are available to correct them.

This hardware-level vulnerability allows user-mode applications, those run by general consumers or businesses, to potentially gain access to kernel-level memory space, an area that is handled by the operating system exclusively and can contain sensitive information like passwords, biometrics, and more. An attacker could use this flaw to potentially access other user-mode application data, compromising entire systems with bypass around integrated operating system firewalls.

At a time when Intel is being pressured from many different angles and markets, this vulnerability and hardware bug comes at an incredibly inopportune time. AMD spent its 2017 releasing competitive products in the consumer space with Ryzen and the enterprise space with EPYC. The enterprise markets in particular are at risk for Intel. The EPYC processors already offered performance and pricing advantages and now AMD can showcase security as none of its processor are affected by the same vulnerability that Intel is saddled with. Though the enterprise space works in cycles, and AMD won’t see an immediate uptick in sales, I would be surprised if this did not push more cloud providers and large scale server deployments to look at the AMD offerings.

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At this point, only the Linux community has publicly discussed the fixes taking place, with initial patches going out earlier this week. Much of the enterprise and cloud ecosystem runs on Linux-based platforms and securing these systems against attack is a crucial step. Microsoft has yet to comment publicly on what its software updates will look like, when they will be delivered, and what impact they have might on consumer systems.

While hardware and software vulnerabilities are common in today’s connected world, there are two key points that make this situation more significant. First, this is a hardware bug, meaning that it cannot be fixed or addressed completely without Intel making changes to its hardware design, a process that can take months or years to complete. As far as we can tell, this bug will affect ALL Intel processors released in the last decade or more, including enterprise Xeon processors and consumer Core and Pentium offerings. And as Intel has been the dominate market leader in both the enterprise and consumer spaces, there are potentially hundreds of millions of affected systems in the field.

The second differentiating point for this issue is that the software fix could impact the performance of systems. Initial numbers have been claiming as much as a 30% reduction in performance, but those results are likely worst case scenarios. Some early testing of the updated Linux platforms indicate performance could decrease from 6-20% depending on the application. Other testing of consumer workloads including gaming show almost no performance impact. Linux founder and active developer Linus Torvalds claims performance impact would range from nothing to “double-digit slowdowns.”

Even though the true nature of this vulnerability is still tied behind non-disclosure agreements, it is unlikely that there will be a double-digit performance reduction on servers at a mass scale when these updates are pushed out. Intel is aware of this vulnerability and has been for some time, and financially it would need to plan for any kind of product replacement or reimbursement campaign it might undertake with partners and customers.

Intel Sheds More Light On Benefits of Nervana Neural Network Processor

Subject: General Tech, Processors | December 12, 2017 - 04:52 PM |
Tagged: training, nnp, nervana, Intel, flexpoint, deep learning, asic, artificial intelligence

Intel recently provided a few insights into its upcoming Nervana Neural Network Processor (NNP) on its blog. Built in partnership with deep learning startup Nervana Systems which Intel acquired last year for over $400 million, the AI-focused chip previously codenamed Lake Crest is built on a new architecture designed from the ground up to accelerate neural network training and AI modeling.

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The full details of the Intel NNP are still unknown, but it is a custom ASIC with a Tensor-based architecture placed on a multi-chip module (MCM) along with 32GB of HBM2 memory. The Nervana NNP supports optimized and power efficient Flexpoint math and interconnectivity is huge on this scalable platform. Each AI accelerator features 12 processing clusters (with an as-yet-unannounced number of "cores" or processing elements) paired with 12 proprietary inter-chip links that 20-times faster than PCI-E, four HBM2 memory controllers, a management-controller CPU, as well as standard SPI, I2C, GPIO, PCI-E x16, and DMA I/O. The processor is designed to be highly configurable and to meet both mode and data parallelism goals.

The processing elements are all software controlled and can communicate with each other using high speed bi-directional links at up to a terabit per second. Each processing element has more than 2MB of local memory and the Nervana NNP has 30MB in total of local memory. Memory accesses and data sharing is managed with QOS software which controls adjustable bandwidth over multiple virtual channels with multiple priorities per channel. Processing elements can talk to and send/receive data between each other and the HBM2 stacks locally as well as off die to processing elements and HBM2 on other NNP chips. The idea is to allow as much internal sharing as possible and to keep as much data stored and transformed in local data as possible in order to save precious HBM2 bandwidth (1TB/s) for pre-fetching upcoming tensors, reduce the number of hops and resulting latency by not having to go out to the HBM2 memory and back to transfer data between cores and/or processors, and to save power. This setup also helps Intel achieve an extremely parallel and scalable platform where multiple Nervana NNP Xeon co-processors on the same and remote boards effectively act as a massive singular compute unit!

Intel Lake Crest Block Diagram.jpg
 

Intel's Flexpoint is also at the heart of the Nervana NNP and allegedly allows Intel to achieve similar results to FP32 with twice the memory bandwidth while being more power efficient than FP16. Flexpoint is used for the scalar math required for deep learning and uses fixed point 16-bit multiply and addition operations with a shared 5-bit exponent. Unlike FP16, Flexpoint uses all 16-bits of address space for the mantissa and passes the exponent in the instruction. The NNP architecture also features zero cycle transpose operations and optimizations for matrix multiplication and convolutions to optimize silicon usage.

Software control allows users to dial in the performance for their specific workloads, and since many of the math operations and data movement are known or expected in advance, users can keep data as close to the compute units working on that data as possible while minimizing HBM2 memory accesses and data movements across the die to prevent congestion and optimize power usage.

Intel is currently working with Facebook and hopes to have its deep learning products out early next year. The company may have axed Knights Hill, but it is far from giving up on this extremely lucrative market as it continues to push towards exascale computing and AI. Intel is pushing for a 100x increase in neural network performance by 2020 which is a tall order but Intel throwing its weight around in this ring is something that should give GPU makers pause as such an achievement could cut heavily into their GPGPU-powered entries into this market that is only just starting to heat up.

You won't be running Crysis or even Minecraft on this thing, but you might be using software on your phone for augmented reality or in your autonomous car that is running inference routines on a neural network that was trained on one of these chips soon enough! It's specialized and niche, but still very interesting.

Also read:

Source: Intel

Rumor: Intel Intentionally Holding Back 10nm

Subject: Processors | December 3, 2017 - 03:16 PM |
Tagged: Intel, Cannonlake, 10nm

According to Fudzilla’s unnamed, “well-placed” sources, Intel could have already launched a 10nm CPU, but they are waiting until yields get better. This comment can be parsed in multiple ways. If they mean that “yeah, we could have a 10nm part out, but not covering our entire product stack and our yields would be so bad that we’d have shortages for several months” then, well, yeah. That is a bit of a “duh” comment. Intel can technically make a 10nm product if you don’t care about yields, supply, and intended TDP.

intel-2015-broadwell-die-shot.jpg

If, however, the comment means something along the lines of “we currently have a worst-case yield of 85%, but we’re waiting until we cross 90%” then… I doubt it’s true (or, at least, it’s not a whole truth). Coffee Lake is technically (if you count Broadwell) their fourth named 14nm architecture. I would expect that Intel’s yields would need to be less-than-mediocre to delay 10nm for this long. Their reactions to AMD seems to be a knee-jerk “add cores” with a little “we’re still the best single-threaded tech” on the side. Also, they are looking like they have fallen behind the other fabs, which mostly ship 10nm in mobile.

I doubt Intel would let all that stigma propagate just to get a few extra percent yield at launch.

Of course, I could be wrong. It just seems like the “we’re waiting for better yields” argument is a little more severe than the post is letting on. They would have pushed out a product by now if it was viable-but-suboptimal, right? That would have been the lesser of two evils, right?

Source: Fudzilla

Mobile gaming on Ryzen 5

Subject: Processors | November 28, 2017 - 03:39 PM |
Tagged: Ryzen 5 2500U, Envy x360, amd

HP released a Ryzen powered laptop recently, the Envy x360, which The Tech Report used to test out the performance of the Ryzen 5 2500U.  The APU sports four cores with a base clock of 2.0GHz, boosting to 3.6GHz and eight GPU CUs with a clock of 1100 MHz.  In order to level the playing field when comparing it to Intel-powered gaming laptops, they installed a Samsung 960 EVO 500GB NVMe which was sadly not installed in the Envy.  The mobile chip's GPU matched a pattern similar to Vega GPUs, offering a bit better performance at lower resolutions but vastly outpacing the performance of Intel's integrated GPU at higher resolutions.  You will still be better off with a mobile GPU playing The Witcher 3 at 1600x900 but the fact that the Ryzen can hit 24fps with decent frame times is very impressive indeed. 

It might even run faster once you remove that certain piece of software recently installed on HP laptops.

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"AMD's Ryzen 5 2500U pairs the competitive performance of four Zen CPU cores with eight compute units of Vega graphics power in a notebook-friendly power envelope. We put the Ryzen 5 2500U to the test aboard HP's Envy x360 laptop to see whether the fusion of Zen and Vega results in the best APU yet."

Here are some more Processor articles from around the web:

Processors

Focusing on the middle of the EPYC

Subject: Processors | November 16, 2017 - 04:38 PM |
Tagged: amd, EPYC, 7401P

AMD's new EPYC server chips range in price from around $4000 for the top end 32 core 7601 to around $500 for the 8 core 7251 with the $1000, 24 core EPYC 7401P sitting towards the middle of this family.  Phoronix have tested quite a few of these processors, today focusing on the aforementioned 7401P, testing it against several other EPYC processors as well as several Xeon E3 and E5 models as well as a Gold and a Silver.  To say that AMD showed up Intel in multithreaded performance is somewhat of an understatement as you can see in their benchmarks. Indeed in many cases you need around $5000 worth of Intel CPU to compete with the 7401P and even then Intel lags behind in many tests.  The only shortcoming of the 7401P is that it can only be run in single socket configurations, not that you necessarily need two of these chips!

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"We've been looking at the interesting AMD EPYC server processors recently from the high-end EPYC 7601 to the cheapest EPYC 7251 at under $500 as well as the EPYC 7351P that offers 16 cores / 32 threads for only about $750. The latest EPYC processor for testing at Phoronix has been the EPYC 7401P, a 24 core / 48 thread part that is slated to retail for around $1075 USD."

Here are some more Processor articles from around the web:

Processors

Source: Phoronix

Rumor: Hades Canyon NUC with AMD Graphics Spotted

Subject: General Tech, Processors | November 9, 2017 - 02:30 PM |
Tagged: Skull Canyon, nuc, kaby lake-g, Intel, Hades Canyon VR, Hades Canyon, EMIL, amd

Hot on the heels of Intel's announcement of new mobile-focused CPUs integrating AMD Radeon graphics, we have our first glimpse at a real-world design using this new chip.

HadesCanyon.jpg

Posted on the infamous Chinese tech forum, Chiphell earlier today, this photo appears to be a small form factor PC design integrating the new Kaby Lake-G CPU and GPU solution.

Looking at the standard size components on the board like the Samsung M.2 SSD and the DDR4 SODIMM memory modules, we can start to get a better idea of the actual size of the Kaby Lake-G module.

Additionally, we get our first look at the type of power delivery infrastructure that devices with Kaby Lake-G are going to require. It's impressive how small the motherboard is taking into account all of the power phases needed to feed the CPU, GPU, and HBM 2 memory. 

NUC_roadmap.png

Looking back at the leaked NUC roadmap from September, the picture starts to become more clear. While the "Hades Canyon" NUCs on this roadmap threw us for a loop when we first saw it months ago, it's now clear that they are referencing the new Kaby Lake-G line of products. The plethora of IO options from the roadmap, including dual Gigabit Ethernet and 2 Thunderbolt 3 ports also seem to match closely with the leaked NUC photo above.

Using this information we also now have a better idea of the thermal and power requirements for Kaby Lake-G. The base "Hades Canyon" NUC is listed with a 65W processor, while the "Hades Canyon VR" is listed with as a 100W part. This means that devices retain the same levels of CPU performance from the existing Kaby Lake-H Quad Core mobile CPUs which clock in at 35W, plus roughly 30 or 65W of graphics performance.

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These leaked 3DMark scores might give us an idea of the performance of the Hades Canyon VR NUC.

One thing is clear; Hades Canyon will be the highest power NUC Intel has ever produced, surpassing the 45W Skull Canyon. Considering the already unusual for a NUC footprint of Skull Canyon, I'm interested to see the final form of Hades Canyon as well as the performance it brings! 

With what looks to be a first half  2018 release date on the roadmap, it seems likely that we could see this NUC or other similar devices being shown off at CES in January. Stay tuned for more continuing coverage of Intel's Kaby Lake-G and upcoming devices featuring it!

Source: Chiphell

Qualcomm Centriq 2400 Arm-based Server Processor Begins Commercial Shipment

Subject: Processors | November 8, 2017 - 02:03 PM |
Tagged: qualcomm, centriq 2400, centriq, arm

At an event in San Jose on Wednesday, Qualcomm and partners officially announced that its Centriq 2400 server processor based on the Arm-architecture was shipping to commercial clients. This launch is of note as it becomes the highest-profile and most partner-lauded Arm-based server CPU and platform to be released after years of buildup and excitement around several similar products. The Centriq is built specifically for enterprise cloud workloads with an emphasis on high core count and high throughput and will compete against Intel’s Xeon Scalable and AMD’s new EPYC platforms.

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Paul Jacobs shows Qualcomm Centriq to press and analysts

Built on the same 10nm process technology from Samsung that gave rise to the Snapdragon 835, the Centriq 2400 becomes the first server processor in that particular node. While Qualcomm and Samsung tout that as a significant selling point, on its own it doesn’t hold much value. Where it does come into play and impact the product position with the resulting power efficiency it brings to the table. Qualcomm claims that the Centriq 2400 will “offer exceptional performance-per-watt and performance-per dollar” compared to the competition server options.

The raw specifications and capabilities of the Centriq 2400 are impressive.

  Centriq 2460 Centriq 2452 Centriq 2434
Architecture ARMv8 (64-bit)
Core: Falkor
ARMv8 (64-bit)
Core: Falkor
ARMv8 (64-bit)
Core: Falkor
Process Tech 10nm (Samsung) 10nm (Samsung) 10nm (Samsung)
Socket ? ? ?
Cores/Threads 48/48 46/46 40/40
Base Clock 2.2 GHz 2.2 GHz 2.3 GHz
Max Clock 2.6 GHz 2.6 GHz 2.5 GHz
Memory Tech DDR4 DDR4 DDR4
Memory Speeds 2667 MHz
128 GB/s
2667 MHz
128 GB/s
2667 MHz
128 GB/s
Cache 24MB L2, split
60MB L3
23MB L2, split
57.5MB L3
20MB L2, split
50MB L3
PCIe 32 lanes PCIe 3.0 32 lanes PCIe 3.0 32 lanes PCIe 3.0
Graphics N/A N/A N/A
TDP 120W 120W 120W
MSRP $1995 $1383 $888

Built on 18 billion transistors a die area of just 398mm2, the SoC holds 48 high-performance 64-bit cores running at frequencies as high as 2.6 GHz. (Interestingly, this appears to be about the same peak clock rate of all the Snapdragon processor cores we have seen on consumer products.) The cores are interconnected by a bi-directional ring bus that is reminiscent of the integration Intel used on its Core processor family up until Skylake-SP was brought to market. The bus supports 250 GB/s of aggregate bandwidth and Qualcomm claims that this will alleviate any concern over congestion bottlenecks, even with the CPU cores under full load.

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The caching system provides 512KB of L2 cache for every pair of CPU cores, essentially organizing them into dual-core blocks. 60MB of L3 cache provides core-to-core communications and the cache is physically divided around the die for on-average faster access. A 6-channel DDR4 memory systems, with unknown peak frequency, supports a total of 768GB of capacity.

Connectivity is supplied with 32 lanes of PCIe 3.0 and up to 6 PCIe devices.

As you should expect, the Centriq 2400 supports the ARM TrustZone secure operating environment and hypervisors for virtualized environments. With this many cores on a single chip, it seems likely one of the key use cases for the server CPU.

Maybe most impressive is the power requirements of the Centriq 2400. It can offer this level of performance and connectivity with just 120 watts of power.

With a price of $1995 for the Centriq 2460, Qualcomm claims that it can offer “4X better performance per dollar and up to 45% better performance per watt versus Intel’s highest performance Skylake processor, the Intel Xeon Platinum 8180.” That’s no small claim. The 8180 is a 28-core/56-thread CPU with a peak frequency of 3.8 GHz and a TDP of 205 watts and a cost of $10,000 (not a typo).

Qualcomm had performance metrics from industry standard SPECint measurements, in both raw single thread configurations as well as performance per dollar and per watt. I will have more on the performance story of Centriq later this week.

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More important than simply showing hardware, Qualcomm and several partners on hand at the press event as well as many statements from important vendors like Alibaba, HPE, Google, Microsoft, and Samsung. Present to showcase applications running on the Arm-based server platforms was an impressive list of the key cloud services providers: Alibaba, LinkedIn, Cloudflare, American Megatrends Inc., Arm, Cadence Design Systems, Canonical, Chelsio Communications, Excelero, Hewlett Packard Enterprise, Illumina, MariaDB, Mellanox, Microsoft Azure, MongoDB, Netronome, Packet, Red Hat, ScyllaDB, 6WIND, Samsung, Solarflare, Smartcore, SUSE, Uber, and Xilinx.

The Centriq 2400 series of SoC isn’t perfect for all general-purpose workloads and that is something we have understood from the outset of this venture by Arm and its partners to bring this architecture to the enterprise markets. Qualcomm states that its parts are designed for “highly threaded cloud native applications that are developed as micro-services and deployed for scale-out.” The result is a set of workloads that covers a lot of ground:

  • Web front end with HipHop Virtual Machine
  • NoSQL databases including MongoDB, Varnish, Scylladb
  • Cloud orchestration and automation including Kubernetes, Docker, metal-as-a-service
  • Data analytics including Apache Spark
  • Deep learning inference
  • Network function virtualization
  • Video and image processing acceleration
  • Multi-core electronic design automation
  • High throughput compute bioinformatics
  • Neural class networks
  • OpenStack Platform
  • Scaleout Server SAN with NVMe
  • Server-based network offload

I will be diving more into the architecture, system designs, and partner announcements later this week as I think the Qualcomm Centriq 2400 family will have a significant impact on the future of the enterprise server markets.

Source: Qualcomm

Intel Announces New CPUs Integrating AMD Radeon Graphics

Subject: Processors | November 6, 2017 - 02:00 PM |
Tagged: radeon, Polaris, mobile, kaby lake, interposer, Intel, HBM2, gaming, EMIB, apple, amd, 8th generation core

In what is probably considered one of the worst kept secrets in the industry, Intel has announced a new CPU line for the mobile market that integrates AMD’s Radeon graphics.  For the past year or so rumors of such a partnership were freely flowing, but now we finally get confirmation as to how this will be implemented and marketed.

Intel’s record on designing GPUs has been rather pedestrian.  While they have kept up with the competition, a slew of small issues and incompatibilities have plagued each generation.  Performance is also an issue when trying to compete with AMD’s APUs as well as discrete mobile graphics offerings from both AMD and NVIDIA.  Software and driver support is another area where Intel has been unable to compete due largely to economics and the competitions’ decades of experience in this area.

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There are many significant issues that have been solved in one fell swoop.  Intel has partnered with AMD’s Semi-Custom Group to develop a modern and competent GPU that can be closely connected to the Intel CPU all the while utilizing HBM2 memory to improve overall performance.  The packaging of this product utilizes Intel’s EMIB (Embedded Multi-die Interconnect Bridge) tech.

EMIB is an interposer-like technology that integrates silicon bridges into the PCB instead of relying upon a large interposer.  This allows a bit more flexibility in layout of the chips as well as lowers the Z height of the package as there is not a large interposer sitting between the chips and the PCB.  Just as interposer technology allows the use of chips from different process technologies to work seamlessly together, EMIB provides that same flexibility.

The GPU looks to be based on the Polaris architecture which is a slight step back from AMD’s cutting edge Vega architecture.  Polaris does not implement the Infinity Fabric component that Vega does.  It is more conventional in terms of data communication.  It is a step beyond what AMD has provided for Sony and Microsoft, who each utilize a semi-custom design for the latest console chips.  AMD is able to integrate the HBM2 controller that is featured in Vega.  Using HBM2 provides a tremendous amount of bandwidth along with power savings as compared to traditional GDDR-5 memory modules.  It also saves dramatically on PCB space allowing for smaller form factors.

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EMIB provides nearly all of the advantages of the interposer while keeping the optimal z-height of the standard PCB substrate.

Intel did have to do quite a bit of extra work on the power side of the equation.  AMD utilizes their latest Infinity Fabric for fine grained power control in their upcoming Raven Ridge based Ryzen APUs.  Intel had to modify their current hardware to be able to do much the same work with 3rd party silicon.  This is no easy task as the CPU needs to monitor and continually adjust for GPU usage in a variety of scenarios.  This type of work takes time and a lot of testing to fine tune as well as the inevitable hardware revisions to get thing to work correctly.  This then needs to be balanced by the GPU driver stack which also tends to take control of power usage in mobile scenarios.

This combination of EMIB, Intel Kaby Lake CPU, HBM2, and a current AMD GPU make this a very interesting combination for the mobile and small form factor markets.  The EMIB form factor provides very fast interconnect speeds and a smaller footprint due to the integration of HBM2 memory.  The mature AMD Radeon software stack for both Windows and macOS environments provides Intel with another feature in which to sell their parts in areas where previously they were not considered.  The 8th Gen Kaby Lake CPU provides the very latest CPU design on the new 14nm++ process for greater performance and better power efficiency.

This is one of those rare instances where such cooperation between intense rivals actually improves the situation for both.  AMD gets a financial shot in the arm by signing a large and important customer for their Semi-Custom division.  The royalty income from this partnership should be more consistent as compared to the console manufacturers due to the seasonality of the console product.  This will have a very material effect on AMD’s bottom line for years to come.  Intel gets a solid silicon solution with higher performance than they can offer, as well as aforementioned mature software stack for multiple OS.  Finally throw in the HBM2 memory support for better power efficiency and a smaller form factor, and it is a clear win for all parties involved.

intel-8th-gen-cpu-discrete-graphics.jpg

The PCB savings plus faster interconnects will allow these chips to power smaller form factors with better performance and battery life.

One of the unknowns here is what process node the GPU portion will be manufactured on.  We do not know which foundry Intel will use, or if they will stay in-house.  Currently TSMC manufactures the latest console SoCs while GLOBALFOUNDRIES handles the latest GPUS from AMD.  Initially one would expect Intel to build the GPU in house, but the current rumor is that AMD will work to produce the chips with one of their traditional foundry partners.  Once the chip is manufactured then it is sent to Intel to be integrated into their product.

Apple is one of the obvious candidates for this particular form factor and combination of parts.  Apple has a long history with Intel on the CPU side and AMD on the GPU side.  This product provides all of the solutions Apple needs to manufacture high performance products in smaller form factors.  Gaming laptops also get a boost from such a combination that will offer relatively high performance with minimal power increases as well as the smaller form factor.

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The potential (leaked) performance of the 8th Gen Intel CPU with Radeon Graphics.

The data above could very well be wrong about the potential performance of this combination.  What we see is pretty compelling though.  The Intel/AMD product performs like a higher end CPU with discrete GPU combo.  It is faster than a NVIDIA GTX 1050 Ti and trails the GTX 1060.  It also is significantly faster than a desktop AMD RX 560 part.  We can also see that it is going to be much faster than the flagship 15 watt TDP AMD Ryzen 7 2700U.  We do not yet know how it compares to the rumored 65 watt TDP Raven Ridge based APUs from AMD that will likely be released next year.  What will be fascinating here is how much power the new Intel combination will draw as compared to the discrete solutions utilizing NVIDIA graphics.

To reiterate, this is Intel as a customer for AMD’s Semi-Custom group rather than a licensing agreement between the two companies.  They are working hand in hand in developing this solution and then both profiting from it.  AMD getting royalties from every Intel package sold that features this technology will have a very positive effect on earnings.  Intel gets a cutting edge and competent graphics solution along with the improved software and driver support such a package includes.

Update: We have been informed that AMD is producing the chips and selling them directly to Intel for integration into these new SKUs. There are no royalties or licensing, but the Semi-Custom division should still receive the revenue for these specialized products made only for Intel.

Source: Intel

ARM Introduces PSA (Platform Security Architecture)

Subject: Processors | October 24, 2017 - 02:12 AM |
Tagged: arm, cortex, mali, PSA, security, TrustZone, Platform Security Architecture, amd, cortex-m, Armv8-m

It is no wonder that device security dominates news.  Every aspect of our lives is approaching always connected status.  Whether it is a major company forgetting to change a default password or an inexpensive connected webcam that is easily exploitable, security is now more important than ever.

arm_secure_01.PNG

ARM has a pretty good track record in providing solutions to their partners to enable a more secure computing experience in this online world.  Their first entry to address this was SecurCore which was introduced in 2000.  Later they released their TrustZone in 2003.  Eventually that technology made it into multiple products as well as being adopted by 3rd party chip manufacturers.

Today ARM is expanding the program with this PSA announcement.  Platform Security Architecture is a suite of technologies that encompasses software, firmware, and hardware.  ARM technology has been included in over 100 billion chips shipped since 1991.  ARM expects that another 100 billion will be shipped in the next four years.  To get a jump on the situation ARM is introducing this comprehensive security architecture to enable robust security features for products from the very low end IoT to the highest performing server chips featuring ARM designs.

arm_secure_02.PNG

PSA is not being rolled out in any single product today.  It is a multi-year journey for ARM and its partners and it can be considered a framework to provide enhanced security across a wide variety of products.  The first products to be introduced using this technology will be the Armv8-M class of processors.  Cortex-M processors with Trusted Firmware running on the Mbed OS will be the start of the program.  Eventually it will branch out into other areas, but ARM is focusing much of its energy on the IoT market and ensuring that there is a robust security component to what could eventually scale out to be a trillion connected products.

There are two new hardware components attached to PSA.  The first is the CryptoIsland 300 on-die security enclave.  It is essentially a second layer of hardware security beyond that of the original TrustZone.  The second is the SDC-600.  This is a secure debug port that can be enabled and disabled using certificates.  This cuts off a major avenue for security issues.  These technologies are integrated into the CPUs themselves and are not offered as a 3rd party chip.

arm_secure_hardware.PNG

If we truly are looking at 1 trillion connected devices over the next 10 years, security is no longer optional.  ARM is hoping to get ahead of this issue by being more proactive in developing these technologies and working with their partners to get them implemented.  This technology will evolve over time to include more and more products in the ARM portfolio and hopefully will be adopted by their many licensees.

 

Source: ARM

Flipping the lid on the i5-8600K

Subject: Processors | October 23, 2017 - 05:22 PM |
Tagged: i5-8600K, Intel, delidding, coffee lake

[H]ard|OCP have once again voided a warranty in the goal of better overclocking.  The past several generations of Intel chips have sparked debate on the effectiveness of their thermal solutions, prompting numerous users to delid their processor to replace the thermal compound inside to improve cooling performance.  With the results of the tests it is clear that the TIM in Coffee Lake is limiting the processor, temperatures decreased by 10C or more at stock and [H] could reach higher stable overclocks once they replaced the TIM that Intel used.  Delidding is not for the faint of heart however, many a CPU has met its death during the process so do be aware of that.  Let us hope this trend does not continue for much longer.

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"We've gotten to spend some quality time with our Intel Core i5-8600K Coffee Lake CPU, and of course we have spent our time finding out just how far we could push the processor's clock under both Air Cooling and Water Cooling. We relid and delid as well. The results look to be very promising for the overclocking enthusiast and gamer."

Here are some more Processor articles from around the web:

Processors

 

Source: [H]ard|OCP

AMD Raven Ridge Performance Leaks - APU with GeForce MX150 Performance

Subject: Graphics Cards, Processors | October 16, 2017 - 05:07 PM |
Tagged: amd, raven ridge, APU, ryzen 7 2700u, Ryzen 5 2500U, ryzen 7 pro 2700u

Hot on the heels of the HP leak that showed the first AMD Raven Ridge based notebook that may be hitting store shelves later this year, another leak of potential Raven Ridge APU performance is cycling through. The AMD Ryzen 7 2700U with integrated Vega-based graphics architecture, and also rumored to have a ~35-watt TDP, is showing 3DMark11 graphics scores near that of the discrete NVIDIA GeForce MX150.

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With a graphics score of 4072, the integrated graphics on the upcoming AMD APU is slightly behind the score of 4570 from the MX150, a difference of 11.5%. Interestingly, the Physics score on the Raven Ridge APU of 6419 is solid as well, and puts an interesting light on the 8th gen KBL-R processors. As you can see in the graph below, from two systems we already have in-house with quad-core parts, CPU performance is going to vary dramatically from one machine to the next depending on the thermal headroom of the physical implementation.

3dmark11.png

The HP Spectre x360 with the Core i7-8550U and the MX150 GPU is able to generate a Physics score of 8278, well above the leaked result of the Raven Ridge APU. However, when we ran the 3DMark11 on the ASUS Zenbook 3 UX490UA with the same Core i7-8550U, the Physics score was 6627, a 19% drop! Clearly there are configurability shifts that will adjust the performance of the 8th gen Intel parts. We are diving more into this effect in a couple of upcoming reviews.

Though the true power consumption of these Ryzen 7 2700U systems is still up in the air, AMD has claimed for some time that it would have the ability to compete with Intel for the first time in several generations. If these solutions turn out to be in the 35-watt range, which would be at or lower than the typical 15-watt Intel CPU and 25-watt NVIDIA discrete GPU combined, AMD may have a winning combination for mobile performance users to entertain.

How hot is your Coffee?

Subject: Processors | October 10, 2017 - 06:35 PM |
Tagged: Intel, coffee lake, i7 8700k

The Tech Report addresses two questions about Intel's i7-8700K in their latest review, how to keep it running cool and how the multi-core enhancement feature changes that answer.  Multi-core enhancement is a BIOS level overclocking feature which allows all cores on Coffee Lake processors to hit the full boost clock instead of only a single core.  In this example, a single core could hit 4.7 GHz while the other cores are being limited to 4.3GHz, however with multi-core enhancement enabled that limit is removed and all cores can hit 4.7GHz simultaneously.  As with any type of overclock this produces significantly more heat and requires more cooling.

This enhancement means there are two answers to the question about cooling your Coffee.  With the enhancement feature disabled you should be just fine with a CM Hyper 212 Evo or equivalent heatsink, however with MCE enabled even a Corsair H115i shows a 90° C package temperature with core temps between 84-90C.  Keep this in mind when shopping for parts; it is nice to have all cores running at their full Boost Clock but you will need to be able to cool them or else see throttling as the chip sense Tjunction temps in excess of 100C.

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"Intel's Core i7-8700K proved an exceptionally well-rounded chip in our testing, but the company's choice of thermal interface material has left many wondering whether the Coffee Lake flagship will prove a challenge to keep cool. We establish a handy baseline for what might make a chip "difficult" to cool and see whether the Core i7-8700K falls on the wrong side of the line."

Here are some more Processor articles from around the web:

Processors

 

Extreme Overclockers Fill Coffee Lake With Liquid Nitrogen

Subject: Processors | October 6, 2017 - 11:44 PM |
Tagged: Extreme Overclocking Competition, overclocking, liquid nitrogen, coffee lake, i7 8700k

A new CPU means new overclocking challenges and with it comes a new batch of refreshed Z370 motherboards. At the high end, the current frequency record for the Core i7 8700K is 7,405.1 MHz obtained by Hovan Yang using a MSI Z370 Godlike Gaming motherboard.

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He’s not the only one testing the limits of Intel’s new six core processors though. Asus held an overclocking event a few weeks ago where renowned overclockers Alex@ro, elmor, der8auer, Rsannino, and shamino battled it out. Der8auer got a pre-release crack at the i7 8700K at the event and after de-lidding and replacing the TIM with liberal amounts of Kryonaut thermal paste managed to achieve 6.8 GHz using 1.8 volts and a 68x multiplier (and bumping the cache speed up to 6.3 GHz). With these settings on the monster Maximus X Apex motherboard, he scored 299 in single threaded and 2253 in multithreaded in Cinebench R15. Der8auer compared this benchmark result to Skylake X at 5.5 GHz scoring 237 in the single threaded test. Following the benchmark run, he went for the highest CPU-z validated clockspeed he could hit and managed to push the chip to 7300 MHz (100MHzx73). From there overclocker Alex from Romania was able to overclock his i7 8700K to 6844 MHz and scored 2306 in Cinebench R15.

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The overclockers broke 10 new records in the six core CPU category and also managed to break a DDR4 clockspeed record by pushing a single 8GB G.Skill DIMM to 5529.2 MHz at 24-31-31-63-3 timings!

Also of note is that Coffee Lake does not depend of FIVR so overclockers are able to use a full pot of liquid nitrogen (or liquid helium) to cool the processor down to much lower temperatures so that they can crank up the voltage and achieve much higher clockspeeds than Skylake-X which cannot boot if temperatures are too low.

While the ASUS team does not hold the clockspeed record anymore (though they might regain it with some Liquid Helium), der8auer has an interesting video and Asus has a blog post with photos talking about the process, setup, and everything that goes into these extreme overclocking sessions including pre-binning the chips, preparing the IHS and motherboard for the super cold (-185°C to -190°C) temperatures, and keeping the processors and motherboards running. For example, and Josh will be interested in this, part of the process of preparing the motherboard involves slathering it in Vaseline!

If you are interested in this extreme overclocking stuff it gives a bit of insight into all the fun to be had!

Source: Asus

Grab a cuppa, you may be looking at the Lake for a while

Subject: Processors | October 5, 2017 - 12:47 PM |
Tagged: Intel, core i5, coffee lake, 8600K, i5-7600K, ryzen 7

[H]ard|OCP had an opportunity to try a different Coffee Lake CPU than Ryan, who provided our initial results on the i7-8700K and Core i5-8400.  In this review, they took a Core i5-8600K and immediately overclocked the chip to 5GHz so they could directly compare Coffee Lake to a Kaby Lake i5-7600K clock for clock, if not for core.  The tests show both CPUs at 5GHz locked clocks, 3600MHz RAM clocks with the exact same timings of 18-19-19-39@2T; they do not show a major improvement in performance between the two chips although it is there.  What it does illustrate is that the performance increased you see on Coffee Lake are from higher clock speeds, which are a good thing.  There will be many who feel the lack of IPC improvement speaks poorly of the new chipset and incompatible socket and they do have a point.   There is fun for AMD fans in this review as well, the Ryzen 7 takes top spot even when running at a mere 4GHz, so start with this one and then take a gander through the rest.

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"If you were waiting for huge IPC gains out of the new Coffee Lake CPU from Intel, you might be waiting for a very long time. We take the Intel Coffee Lake Core i5-8600K CPU and match it up GHz to GHz with the Intel Core i5-7600K Kaby Lake processor. And we throw in a Ryzen 7 at 4GHz just for fun."

Here are some more Processor articles from around the web:

Processors

 

Source: [H]ard|OCP