Intel Prevents Overclocking of non-K Haswell Processors, and Strips Virtualization and TSX Features From K Parts
Subject: Processors | June 13, 2013 - 09:59 AM | Tim Verry
Tagged: tsx, overclocking, Intel, i7-4770k, haswell
First revealed at IDF Beijing, Intel's latest generation 4th Generation Core "Haswell" processors enjoy a refined architecture, improved processor graphics, an integrated voltage regulator (FIVR), and for the enthusiast crowd, new methods for overclocking.
In truth, the methods for overclocking Haswell are very similar to those used to overclock Intel's Sandy Bridge and Ivy Bridge processors. However, Intel has further unlocked the new Haswell CPUs. Enthusiasts can set an overclocked Turbo clockspeed, use additional base clock (BCLK) values (100 MHz, 125 MHz, and 167 MHz), and overclock the unlocked processor graphics core clockspeed and memory clockspeed (memory in 200 MHz or 266 MHz steps). The additional BCLK values allow for easy overclocks without putting the other subsystems (such as the PCI-E bus, GPU, and memory) out of spec, which is important for the PCI-E bus which needs to be close to 100 MHz for a stable system.
The following PC Perspective articles have further information on overclocking unlocked "K" edition Haswell processors:
- Integrated Voltage Regulator and Overclocking Haswell - Ryan pushes a Core i7-4770K to 4.6GHz
- Intel Talks Haswell Overclocking at IDF Beijing - Intel outlines overclocking features of Haswell at IDF
Although Intel's overclocking reveal at IDF was fairly detailed, the company did not get into specifics on how overclocking would work on non-K chips.
On that note, the crew over at the Tech Report uncovered some rather disheartening facts such that the non-K edition Haswell processors will, essentially, be locked at stock speeds and not overclockable (they are slightly more locked down than previous generations).
While the K edition Haswell processors, such as the Core i7-4770K, will enjoy unlocked multipliers, unlocked GPU and memory clockspeeds, and additional BCLK options, the standard non-K chips (ie Core i7-4770, Core i5-4670, et al) will have locked multipliers, no Turbo Boost clockspeed overclocking, and will not be allowed to use the additional 125 MHz and 167 MHz BLCK options, which effectively makes overclocking these standard chips impossible. It may still be possible to push the BLCK up a few MHz, but without the extra
stepping and gearing ratio options, the other component clockspeeds based off that same base clock are going to go out of spec and will become unstable fairly quickly as you try to push that BLCK up.
There is one saving grace for enthusiasts considering a non-K part, however. The standard non-K CPUs will have Intel's latest TSX extensions and enterprise virtualization technologies enabled.
Although quite the head scratcher, Intel has decided to disable TSX, vPro, and VT-d on the unlocked K edition chips. The TSX extensions are not widely used yet, but will provide a noticeable performance boost to future programs that do take advantage of them by allowing developers to essentially mark off sections of code that can be run independently, and thus increase the multi-threaded-ness of the application by running as much code in parallel across multiple cores as possible. Further, the vPro and VT-d features are used by virtual machine applications (with VT-d being more relevant to the consumer side of things).
In short, Intel has continued to lock down and artificially limit its chips, as many enthusiasts suspected would happen. Standard non-K Haswell processors are more locked down than ever, and even the premium unlocked K CPUs suffer with the (odd) removal of TSX and virtualization support. As Mr. Gasior points out, enthusiasts are going to be faced with an odd choice where they can either spend extra money on a premium K part that will overclock but is limited in other ways, or go with the lower cost part that has all of the ISA extensions and virtualization support turned on... but is not overclockable.
In my opinion, locking down the standard chips is one thing-- Intel needs to incentivize enthusiasts to go with the more expensive (~$25 premium) unlocked K processors some how -- but if those same enthusiasts are spending extra money for a premium chip, they should get all the features the accompanying non-K SKU has as well as overclocking.
What do you think about the artificial limitations placed on the various Haswell SKUs?
Subject: General Tech | June 5, 2013 - 01:45 PM | Jeremy Hellstrom
Tagged: linux, haswell, ubuntu 13.04, i7-4770k
The story is familiar as you can quickly see from this quote in Phoronix's review of Haswell on Linux, "Polished Haswell support coming to an "out of the box" Linux desktop won't really be there until later in H2'2013." However that does not mean it does not work at all, they tested several kernels and versions to find the most stable way to run Haswell and to take advantage of the internal GPU. They successfully tested with Linux 3.10 kernel, Mesa 9.2, GCC 4.8.1, and LLVM 3.3 and found performance improvements across the board when compared to Ivy Bridge processors which could be a good reason to consider holding out on an Ivy Bridge CPU as an upgrade choice, as Intel is working to improve Haswell support and it is a much improved CPU compared to previous generations.
"This past weekend I shared the first experiences of running Intel's new Haswell CPU on Linux. While Intel Haswell is a beast and brings many new features and innovations to the new Core CPUs succeeding Ivy Bridge, there were a few shortcomings with the initial Linux support. It still appears that the Core i7 4770K is still being finicky at times for both the processor and graphics, but in this article are the first benchmarks. Up today are benchmarks of the Intel Core i7 4770K when running Ubuntu 13.04 with the Linux 3.10 kernel."
Here is some more Tech News from around the web:
- Intel's plan for Haswell, Silvermont, Bay Trail: WORLD DOMINATION @ The Register
- A quick look at LSI's Syncro CS, HA DAS Collaboration with Microsoft
- Meeting The Men Behind Haswell @ TechARP
- Haswell Xeons bring brawn to microservers, media servers, more @ The Register
- Eyeing the gaming market: Q&A with ECS executive Sam Yeh @ DigiTimes
- Stuffa Jacket @ NikKTech
Subject: Editorial, General Tech, Motherboards, Processors | June 4, 2013 - 10:40 AM | Ryan Shrout
Tagged: z87, video, overclocking, live, i7-4770k, haswell, ASUS ROG, asus
While we run around with our hair on fire trying to get ready for the Intel Haswell and Z87 product launch this weekend, I wanted to let everyone know about a live stream event we will be holding on Tuesday, June 4th. JJ from ASUS, a crowd favorite for sure, will be joining us LIVE in studio to talk all about the new lineup of ASUS Z87 motherboards. We'll also discuss performance and overclocking capabilities of the new processor and platform.
ASUS Z87 and Haswell Live Stream
10am PT / 1pm ET - June 4th
Be sure you stop by and join in the show! Questions will be answered, prizes will be given out and fun will be had! Who knows, maybe we can break some stuff live as well?? On hand to give away to those of you joining the live stream, we'll have these prizes:
- 2 x ASUS Z87 Motherboards
- 1 x ASUS Graphics card
Methods for winning will be decided closer to the event, but if you are watching live, you'll be included. And we'll ship anywhere in the world!
ASUS and I also want the event to be interactive, so we want your questions. We'll of course being paying attention to the chat room on our live page but you'll have better luck if you submit your questions about the ASUS Z87 products and Haswell processors before hand, in the comments section below. You don't have to register to ask and we'll have the ability to read them beforehand!
I'll update this post with more information after the reviews and stories start to hit, so keep an eye here for more details!!
Haswell - A New Architecture
Thanks for stopping by our coverage of the Intel Haswell, 4th Generation Core processor and Z87 chipset release! We have a lot of different stories for you to check out and I wanted to be sure you knew about them all.
- PCPer Live! ASUS Z87 Motherboard and Intel Haswell Live Event! - Tuesday, June 4th we will be hosting a live streaming event with JJ from ASUS. Stop by to learn about Z87 and overclocking Haswell and to win some motherboards and graphics cards!
- ASUS ROG Maximus VI Extreme Motherboard Review
- MSI Z87-GD65 Gaming Motherboard Review
- ASUS Gryphon Z87 Micro-ATX Motherboard Review
This spring has been unusually busy for us here at PC Perspective - with everything from new APU releases from AMD, new graphics cards from NVIDIA and now new desktop and mobile processors from Intel. There has never been a better time to be a technology enthusiast though some would argue that the days of the enthusiast PC builder are on the decline. Looking at the revived GPU wars and the launch of Intel's Haswell architecture, 4th Generation Core processors we couldn't disagree more.
Built on the same 22nm process technology that Ivy Bridge brought to the world, Haswell is a new architecture from Intel that really changes focus for the company towards a single homogenous design that has the ability to span wide ranging markets. From tablets to performance workstations, Haswell will soon finds its way into just about every crevasse of your technology life.
Today we focus on the desktop though - the release of the new Intel Core i7-4770K, fully unlocked, LGA1150 processor built for the Z87 chipset and DIY builders everywhere. In this review we'll discuss the architectural changes Haswell brings, the overclocking capabilities and limitations of the new design, application performance, graphics performance and quite a bit more.
Haswell remains a quad-core processor built on 1.4 billion transistors in a die measuring 177 mm2 with integrated processor graphics, shared L3 cache, dual channel DDR3 memory controller. But much has changed - let's dive in.
Subject: General Tech | December 13, 2012 - 02:43 PM | Ken Addison
Tagged: Z77, valve, stinger, Steam Box, steam, podcast, pcper, itx, i7-4770k, haswell, gift guide, evga, Crysis 3, 4770k, video
PC Perspective Podcast #230 - 12/13/2012
Join us this week as we talk about the EVGA Stinger Z77 Mini ITX board, Our Holiday Gift Guide, Steam Box and more!
The URL for the podcast is: http://pcper.com/podcast - Share with your friends!
- iTunes - Subscribe to the podcast directly through the Store
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Hosts: Ryan Shrout, Jeremy Hellstrom, Josh Walrath, Allyn Malventano and Chris Barbere
Program length: 1:29:11
Podcast topics of discussion:
- We are going to try Planetside 2 after the podcast!
- Week in Reviews:
- 0:40:15 This Podcast is brought to you by MSI!
News items of interest:
- 0:41:30 Transporter Private Storage
- 0:47:00 Intel will support sockets into foreseeable future as well
- 0:51:00 Crysis 3 will have advanced PC options
- 0:53:30 Valve Confirms the Steam Box is coming
- 1:06:15 Low power Atom chips for servers
- 1:10:20 ASRock Board with pass through for Thunderbolt
- 1:13:00 Haswell 4000 series CPUs will be 84 watt
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Subject: Processors | December 12, 2012 - 05:07 PM | Ryan Shrout
Tagged: haswell, Intel, i7-4770k
A (translated) report coming from VR-Zone shows a table that is giving us just a bit more information about the upcoming Intel Haswell architecture and processors.
First, it looks like Intel is going to lean into the same naming scheme for these parts calling them the Core i3/i5/i7 4000 series parts, starting with the Core i7-4770K as the highest end option. It will be a quad-core HyperThreaded part with a maximum Turbo Boost frequency of 3.9 GHz, very similar to the speeds and feed of today.
Graphics will be updated and called the HD 4600 with a clock rate as high as 1250 MHz. The memory controller will remain dual-channel with support for DDR3-1600.
The only other item worth mentioning is the 84 watt TDP, up from the 77 watt TDP of the current Ivy Bridge lineup.
All that is left to know now is ... pretty much everything including the performance of these new cores, the new graphics architecture and how that higher TDP will be utilized.