Subject: General Tech | November 15, 2018 - 12:29 PM | Jeremy Hellstrom
Tagged: meltdown, spectre, amd, arm, Intel
Happy Thursday, here's some new Spectre and Meltdown vulnerabilities to cheer you up, including the first Meltdown flaw to which AMD chips are vulnerable to delayed exception handling. That brings the tally to seven Meltdown and 14 Spectre flaw variants which effect modern processor architecture; the only good news is not all chips are vulnerable to all flaws. Intel told The Register that these flaws can be mitigated with software while the researchers pointed out that these vulnerabilities were successfully carried out on patched systems; AMD declined to comment.
Of course, that doesn't matter if you choose not to install the software patches due to the performance hit which is a side effect to many of those mitigations.
"Computer security researchers have uncovered yet another set of transient execution attacks on modern CPUs that allow a local attacker to gain access to privileged data, fulfilling predictions made when the Spectre and Meltdown flaws were reported at the beginning of the year."
Here is some more Tech News from around the web:
- NVIDIA on the Cause of RTX 2080 Series Card Failures @ [H]ard|OCP
- Indiegogo 'Guaranteed Shipping' Will Ensure Refunds If Campaigns Fail @ Slashdot
- Microsoft Office data telemetry breaches GDPR, Dutch investigators rule @ The Inquirer
- Intel to scale down processor shipments to DIY distributors in 4Q18 @ DigiTimes
- Samsung unveils next-generation 8nm Exynos silicon @ The Register
While 2018 so far has contained lots of talk about graphics cards, and new GPU architectures, little of this talk has been revolving around AMD. After having launched their long-awaited Vega GPUs in late 2017, AMD has remained mostly quiet on the graphics front.
As we headed into summer 2018, the talk around graphics started to turn to NVIDIA's next generation Turing architecture, the RTX 2070, 2080, and 2080 Ti, and the subsequent price creeps of graphics cards in their given product segment.
However, there has been one segment in particular that has been lacking any excitement in 2018—mid-range GPUs for gamers on a budget.
AMD is aiming to change that today with the release of the RX 590. Join us as we discuss the current state of affordable graphics cards.
|RX 590||RX 580||GTX 1060 6GB||GTX 1060 3GB|
|GPU||Polaris 30||Polaris 20||GP106||GP106|
|Rated Clock||1469 MHz Base
1545 MHz Boost
1257 MHz Base
|1506 MHz Base
1708 MHz Boost
|1506 MHz Base
1708 MHz Boost
|Memory Clock||8000 MHz||8000 MHz||8000 MHz||8000 MHz|
|Memory Bandwidth||256 GB/s||256 GB/s||192 GB/s||192 GB/s|
|TDP||225 watts||185 watts||120 watts||120 watts|
|Peak Compute||7.1 TFLOPS||6.17 TFLOPS||3.85 TFLOPS (Base)||2.4 TFLOPS (Base)|
|MSRP (of retail cards)||$239||$219||$249||$209|
Subject: Processors | November 13, 2018 - 03:36 PM | Jeremy Hellstrom
Tagged: x299, Threadripper, skylake-x, Intel, i9-9980XE, i9-7980XE, HEDT, core x, amd, 2990wx
The new ~$2000 i9-9980XE is a refreshed Skylake chip, using Intel's 14-nm++ process, with 18 multithreaded cores running at 3GHz with a Boost clock of 4.4GHz. If you were to lift up the lid, you would find the same Solder Thermal Interface Material we saw in the last few releases so expect some brave soul to run delidding tests at some point in the near future. As it stands now, The Tech Report's overclocking tests had the same results as Ken, with 4.5GHz across all cores being the best they could manage. While the chip does offer new features, many of them are aimed specifically at production tasks and will not benefit your gaming experience.
Check out the performance results here and below the fold.
"Intel is bolstering its Core X high-end desktop CPUs with everything in its bag of tricks, including 14-nm++ process technology, higher clock speeds, larger caches, and solder thermal interface material. We put the Core i9-9980XE to the test to see how those refinements add up against AMD's high-end desktop onslaught."
Here are some more Processor articles from around the web:
- Intel Core i9-9980XE vs AMD Ryzen Threadripper @ [H]ard|OCP
- Intel Core i9-9980XE Extreme Edition Processor Review @ Legit Reviews
- Intel Core i9-9900K @ Techspot
- Raptor Talos II POWER9 Benchmarks Against AMD Threadripper & Intel Core i9 @ Phoronix
- The Best Entry Level Gaming CPU: Athlon 200GE vs. Pentium G5400 vs. Ryzen 3 2200G @ Techspot
Shopping for a CPU in 2018 has been a bit of a moving target. Between the launch of AMD's Ryzen 2000 series processors in the beginning of the year, new AMD Threadripper X and WX-series products, and a consumer CPU refresh from Intel last month, it's been difficult to keep track of.
Now we are rounding out 2018 with new products for the last remaining platform that hasn't seen a refresh this year, Intel's Core X-series of processors, namely the Intel Core i9-9980XE.
Join us, as we talk about Intel's new 9th-generation Core X-series processors, and the current landscape of HEDT desktop platforms.
|Core i9-9980XE||Core i9-7980XE||Threadripper 2990WX||Threadripper 2970WX||Threadripper 2950X||Threadripper 2920X|
|Base Clock||3.0 GHz||2.6 GHz||3.0 GHz||3.0 GHz||3.5 GHz||3.5 GHz|
|Boost Clock||4.4 GHz||4.2 GHz||4.2 GHz||4.2 GHz||4.4 GHz||4.3 GHz|
|L3 Cache||24.75MB||24.75MB||64MB||64MB||32MB||32 MB|
|Memory Support||DDR4-2666 (Quad-Channel)||DDR4-2666 (Quad-Channel)||DDR4-2933 (Quad-Channel)||DDR4-2933 (Quad-Channel)||DDR4-2933 (Quad-Channel)||DDR4-2933 (Quad-Channel)|
|TDP||165 Watts||165 Watts||250 Watts||250 Watts||180 Watts||180 Watts|
Subject: General Tech | November 8, 2018 - 01:54 PM | Ken Addison
Tagged: Zen 2, xeon, Vega, rome, radeon instinct, podcast, MI60, Intel, EPYC, cxl-ap, chiplet, cascade lake, amd, 7nm
PC Perspective Podcast #521 - 11/08/18
Join us this week for discussion on AMD's new Zen 2 architecture, 7nm Vega GPUs, SSD encryption vulnerabilities, and more!
The URL for the podcast is: http://pcper.com/podcast - Share with your friends!
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Hosts: Jim Tanous, Jeremy Hellstrom, Josh Walrath, Allyn Malventano, Ken Addison, and Sebastian Peak
Peanut Gallery: Alex Lustenberg
Program length: 1:42:27
Podcast topics of discussion:
Week in Review:
Thanks to Casper for supporting our podcast! Save $50 on select mattresses at http://www.casper.com/pcper code pcper
News items of interest:
Picks of the Week:
Subject: Processors | November 7, 2018 - 11:00 PM | Tim Verry
Tagged: Zen 2, rome, PCI-e 4, Infinity Fabric, EPYC, ddr4, amd, 7nm
In addition to AMD's reveal of 7nm GPUs used in its Radeon Instinct MI60 and MI50 graphics cards (aimed at machine learning and other HPC acceleration), the company teased a few morsels of information on its 7nm CPUs. Specifically, AMD teased attendees of its New Horizon event with information on its 7nm "Rome" EPYC processors based on the new Zen 2 architecture.
Tom's Hardware spotted the upcoming Epyc processor at AMD's New Horizon event.
The codenamed "Rome" EPYC processors will utilize a MCM design like its EPYC and Threadripper predecessors, but increases the number of CPU dies from four to eight (with each chiplet containing eight cores with two CCXs) and adds a new 14nm I/O die that sits in the center of processor that consolidates memory and I/O channels to help even-out the latency among all the cores of the various dies. This new approach allows each chip to directly access up to eight channels of DDR4 memory (up to 4TB) and will no longer have to send requests to neighboring dies connected to memory which was the case with, for example, Threadripper 2. The I/O die is speculated by TechPowerUp to also be responsible for other I/O duties such as PCI-E 4.0 and the PCH communication duties previously integrated into each die.
"Rome" EPYC processors with up to 64 cores (128 threads) are expected to launch next year with AMD already sampling processors to its biggest enterprise clients. The new Zen 2-based processors should work with existing Naples and future Milan server platforms. EPYC will feature from four to up to eight 7nm Zen 2 dies connected via Infinity Fabric to a 14nm I/O die.
AMD CEO Lisa Su holding up "Rome" EPYC CPU during press conference earlier this year.
The new 7nm Zen 2 CPU dies are much smaller than the dies of previous generation parts (even 12nm Zen+). AMD has not provided full details on the changes it has made with the new Zen 2 architecutre, but it has apparently heavily tweaked the front end operations (branch prediction, pre-fetching) and increased cache sizes as well as doubling the size of the FPUs to 256-bit. The architectural improvements alogn with the die shrink should allow AMD to show off some respectable IPC improvements and I am interested to see details and how Zen 2 will shake out.
Subject: General Tech | November 6, 2018 - 03:42 PM | Jeremy Hellstrom
Tagged: AMD Radeon Instinct, MI60, MI50, 7nm, ROCm 2.0, HPC, amd
If you haven't been watching AMD's launch of the 7nm Vega based MI60 and MI50 then you can catch up right here.
You won't be gaming with these beasts, but for those working on deep learning, HPC, cloud computing or rendering apps you might want to take a deeper look. The new PCIe 4.0 cards use HBM2 ECC memory and Infinity Fabric interconnects, offering up to 1 TB/s of memory bandwidth.
The MI60 features 32GB of HBM2 with 64 Compute Units containing 4096 Stream Processors which translates into 59 TOPS INT8, up to 29.5 TFLOPS FP16, 14.7 TFLOPS FP32 and 7.4 TFLOPS FP64. AMD claims is currently the fastest double precision PCIe card on the market, with the 16GB Tesla V100 offering 7 TFLOPS of FP64 performance.
The MI50 is a little less powerful though with 16GB of HBM2, 53.6 TFLOPS of INT8, up to 26.8 TFLOPS FP16, 13.4 TFLOPS FP32 and 6.7 TFLOPS FP64 it is no slouch.
With two Infinity Fabric links per GPU, they can deliver up to 200 GB/s of peer-to-peer bandwidth and you can configure up to four GPUs in a hive ring configuration, made of two hives in eight GPU servers with the help of the new ROCm 2.0 software.
Expect to see AMD in more HPC servers starting at the beginning of the new year, when they start shipping.
Subject: Processors | November 5, 2018 - 02:00 AM | Ken Addison
Tagged: xeon e-2100, xeon, MCP, Intel, Infinity Fabric, EPYC, cxl-ap, cascade lake, amd, advanced performance
Ahead of the Supercomputing conference next week, Intel has announced a new market segment for Xeons called Cascade Lake Advanced Platform (CXL-AP). This represents a new, higher core count option in the Xeon Scalable family, which currently tops out at 28 cores.
Through the use of a multi-chip package (MCP), Intel will now be able to offer up to 48-cores, with 12 DDR4 memory channels per socket. Cascade Lake AP is being targeted at dual socket systems bringing the total core count up to 96-cores.
Intel's Ultra Path Interconnect (UPI), introduced in Skylake-EP for multi-socket communication, is used to connect both the MCP packages on a single processor together, as well as the two processors in a 2S configuration.
Given the relative amount of shade that Intel has thrown towards AMD's multi-die design with Epyc, calling it "glued-together," this move to an MCP for a high-end Xeon offering will garner some attention.
When asked about this, Intel says that the issues they previously pointed out with aren't inherently because it's a multi-die design, but rather the quality of the interconnect. By utilizing UPI for the interconnect, Intel claims their MCP design will provide performance consistency not found in other solutions. They were also quick to point out that this is not their first Xeon design utilizing multiple packages.
Intel provided some performance claims against the current 32-core Epyc 7601, of up to 3.4X greater performance in Linpack, and up to 1.3x in Stream Triad.
As usual, whether or not these claims are validated will come down to external testing when people have these new Cascade Lake AP processors in-hand, which is set to be in the first half of 2019.
More details on the entire Cascade Lake family, including Cascade Lake AP, are set to come at next week's Supercomputing conference, so stay tuned for more information as it becomes available!
Subject: General Tech | October 31, 2018 - 04:33 PM | Jeremy Hellstrom
Tagged: apple, amd, Vega
Among the various Apple announcements this week was a win for AMD, as Apple has renewed their agreement and will be using Radeon Pro Vega GPUs in it's soon to be released MacBook Pros. We aren't expecting any more big surprises from the release, such as the iPad Pro now sporting USB C, the updated GPU may be the largest change this generation but it will be appreciated by some content creators. You can read more about the various announcements over at The Inquirer.
"AMD GPUs are nothing new in Mac machines, given the MacBook Pros have previously rocked the Radeon Pro 560X, but Cupertino is now bringing AMD's Vega-based GPUs to its expensive laptops."
Here is some more Tech News from around the web:
- Helium implicated in weird iPhone malfunctions @ Ars Technica
- 50 ways to leave your lover, but four to sniff browser history @ The Register
- It's been a week since engineers approved a new DNS encryption standard and everyone is still yelling @ The Register
- OCC Reveals Its Best AMD Motherboard Picks 2018OCC Reveals Its Best AMD Motherboard Picks 2018
- Guru3D Rig of the Month - October 2018
Subject: Processors | October 30, 2018 - 03:30 PM | Jeremy Hellstrom
Tagged: threadripper 2, precision boost 2, amd, 2970wx, 2920x
Now that you've had some time to digest Ken's look at the 2920X and 2970WX, take a look at how AMD's new silicon performed on other test beds. Over at The Tech Report they ran the 2920X paired with DDR4-3200 and spent a fair amount of time testing workstation tasks including DAWBench VI tests. There are also a number of games they tested which are not included in our suite so start your reading over there.
"While those figures may seem little changed from those of the Ryzen Threadripper 1920X, AMD's Precision Boost 2 technology promises a more graceful descent to that base clock as cores and threads become loaded down.""
Here are some more Processor articles from around the web:
- AMD Ryzen Threadripper 2970WX @ TechPowerUp
- AMD Ryzen Threadripper 2920X @ Guru of 3D
- AMD Threadripper 2970WX & 2920X @ Techspot
- AMD Ryzen Threadripper 2920X @ TechPowerUp
- AMD Ryzen Threadripper 2970WX @ Guru of 3D
- AMD Ryzen Threadripper 2920X & 2970WX Linux Performance Benchmarks @ Phoronix