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posted by cmn32480 on Saturday December 05 2015, @06:28PM   Printer-friendly
from the same-designer-as-the-iPhone-6 dept.

Found this at HotHardware. From the article:

It's been discovered that some third-party heat sinks can physically damage Intel's new Skylake CPUs, along with the pins in the accompanying motherboard socket. The problem has prompted at least one cooler maker to change the design of its Socket 1151 heat sinks and it wouldn't be surprising if others soon followed suit.

The apparent issue is the substrate Intel used for its Skylake chips. A close-up shot of a Skylake CPU sitting side-by-side with a Broadwell processor shows that the substrate is noticeably thinner on Skylake, and thus prone to bending from the force that some third-party heat sinks exert. It also poses a problem for the tiny pins in the socket area of Skylake motherboards.

Sounds like something to be careful of when building that new rig. Has anyone experienced the issue?

takyon:

Update - 3:08PM: This just in from Intel...

"The design specifications and guidelines for the 6th Gen Intel Core processor using the LGA 1151 socket are unchanged from previous generations and are available for partners and 3rd party manufacturers. Intel can't comment on 3rd party designs or their adherence to the recommended design specifications. For questions about a specific cooling product we must defer to the manufacturer."

And so it would appear this is an OEM 3rd party manufacturer issue, rather than a generalized issue with the processor(s).


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  • (Score: 3, Informative) by gman003 on Saturday December 05 2015, @09:00PM

    by gman003 (4155) on Saturday December 05 2015, @09:00PM (#272268)

    AVX is a series of SIMD instruction set extensions, similar to SSE or MMX or 3DNow.

    AVX and AVX2 generally just extended SSE from 128-bit to 256-bit operation. AVX was introduced with Sandy Bridge ("second generation i7"), AVX2 was introduced with Haswell ("fourth generation i7"). They're fairly well-supported by compilers now, so as long as you're building your own binaries you've probably gotten a performance boost on anything that does a lot of parallel math. I believe they are also supported on certain AMD chips, but I haven't looked into all the details because it looks like a messy subject.

    AVX-512 further extends it to 512-bit operation. This is the width of the parallelism, not the actual data, mind you - SSE's 128-bit SIMD was four 32-bit or two 64-bit operands, AVX's 256-bit is eight 32-bit or four 64-bit operands, and so AVX-512 works on sixteen 32-bit or eight 64-bit operands. This was designed for the Xeon Phi coprocessor - a PCIe card used mainly in supercomputers, where crunching that much data is commonplace. It was intended to be launched on Skylake ("sixth generation") Xeons, not sure if that's happened yet. There are no consumer processors on Intel's roadmap with AVX-512 support, and compiler support isn't widespread AFAIK so unless you hand-write code for AVX-512 you might not see as much performance improvement.

    AVX3 doesn't exist yet. That original AC has no idea what he's talking about.

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  • (Score: 0) by Anonymous Coward on Saturday December 05 2015, @10:53PM

    by Anonymous Coward on Saturday December 05 2015, @10:53PM (#272290)

    AVX3 and AVX-512 are the same thing, and GCC has been capable of automatically generating AVX-512 instructions since 2014.