Update 06/08: Intel has since backtracked on its initial statements, clarifying that while a 28-core part is coming in Q4 of this year, its stock frequency will not be 5GHz. Rather this was a (very poorly communicated) overclocking demo of the upcoming part. For more details, please see this article.

Alongside the launch of Intel’s first 5 GHz processor, the 6-core Core i7-8086K, Intel today also showcased a 28-core single socket machine also running at 5 GHz. The system on display scored 7334 in Cinebench R15, and Gregory Bryant (SVP and GM of Intel Client Computing Group) explicitly stated that it would be coming in Q4 this year.

No other details were provided, however for it to exist in a current platform, this new processor would likely be in LGA2066 (X299) or LGA3647 (the server socket). Intel technically already makes 28-core monolithic designs in the Intel Xeon Scalable Platform with the Xeon Platinum 8180, which is a $10k processor, which runs a lot slower than 5.0 GHz.

Personally, I feel this new processor is not a higher binned Platinum 8180. Going up from 2.8 GHz base / 3.5 GHz turbo to 5.0 GHz all-core frequency is a big step, assuming the 5.0 GHz value was not an overclock. I would fully expect that this is the point where Intel starts introducing EMIB to CPUs. (ed: FWIW, I disagree with Ian; my money is on a heavily binned 28-core XCC processor made on 14++. We've seen that Intel can do 5GHz on that process with the 8086K)

Last week I discussed the potential death of Intel’s low-end core design for high-end desktop, because it was being eclipsed by the mainstream parts. The only way Intel would be able to reuse the server versions of those low-core count designs would be to enable its embedded multi-die interconnect bridge (EMIB) technology to put two or more of the smaller dies on the same package. This would allow Intel do amortize costs in the same way AMD does by making use of higher yielding parts (as die size goes down, yield goes up).

Intel’s EMIB has a potentially high bi-directional bandwidth, so it would be interesting to see if Intel would bind two dies together and if there is any additional latency or bandwidth decrease with two dies together. With 28 cores, that would subdivide by two to 14-each, but not to four. So this processor is likely to be two 14-core dies using EMIB… which would actually be Intel’s HCC (high-core-count) processor design.

To add something extra to the mix, Intel might not be using EMIB at all. It could just as easily be the QPI interface on package, much how the company is using the Xeon + FPGA products announced recently.

So our primary questions to Intel would be:

  1. Monolithic or multi-die
  2. QPI or EMIB
  3. Socket
  4. Die size
  5. TDP / Power consumption at 5 GHz

TDP is a big part of the equation here. 28 cores at 5.0 GHz doesn’t come for free. The next questions are around price and launch date.



There's the discussion about cutting into Intel's 1P market with such a product. But also, consider that at CES that Supermicro rated their X299 motherboards as supporting 300W processors, so it could easily correlate this processor to LGA2066 and a 300W TDP. That would be... fun... I guess?

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  • mrfluffyhedgehog - Wednesday, June 6, 2018 - link

    please correct the heading or put up an update …

    this cpu is an old xeon part, was cooled with an actively cooled (aka sub ambient) water cooling loop to get to 5ghz.

    this is so far away from anyhting even enthusiasts would go for this comes enters the realm of extreme overclocking.

    nothing about this cpu is impressive, save maybe the obvious desperation of intel that lead them to "re-release" a server cpu as a workstation part.
  • El Sama - Wednesday, June 6, 2018 - link

    Ian Did you really believed this BS of a 28 cores Skylake X Xeon overclocked to 5 Ghz on a normal cooler a reality I AM sorely disappointed, how much do you think this thing is pulling 600 W, 700 W? How do you think they are cooling that? Come on Ian.
  • B3an - Saturday, June 9, 2018 - link

    Insane isn't it. Lost even more respect for this site. If these people actually think this could have been possible then it says a lot about the credibility of their articles.
  • B3an - Saturday, June 9, 2018 - link

    Permanently Adblocked AT.
  • evilpaul666 - Wednesday, June 6, 2018 - link

    Who gives a #@% what a *single core* on a *28 core* CPU can be clocked up to?
  • mapesdhs - Wednesday, June 6, 2018 - link

    This headline and Intel's PR is complete nonsense. Basic math on how a 7980XE behaves proves there's no way such a thing could function with normal ambient-based cooling. GN summed it up nicely:

  • Lolimaster - Thursday, June 7, 2018 - link

    This fake news is basically identify your intel shill site unless they put "5Ghz cpu coming :D"
  • El Sama - Thursday, June 7, 2018 - link

    Is anyone going to edit this BS title, Intel is not releasing a 5ghz 28 cores CPU. Stop this BS Anandtech.
  • allenb - Thursday, June 7, 2018 - link

    Indeed, the headline on this piece is misleading at best given the information that's come to light over the last two days. Please revise!
  • jameskatt - Friday, June 8, 2018 - link

    Looks like a Mac Pro CPU candidate.

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