Intel Core i9-7980XE and Core i9-7960X Conclusion

In the 2000s, we had the frequency wars. Trying to pump all the MHz into a single core ended up mega-hurting one company in particular, until the push was made to multi-core and efficient systems. Now in the 2010s, we have the Core Wars. You need to have at least 16 cores to play, and be prepared to burn power like never before. With today’s launch, Intel has kicked their high-end desktop offerings up a notch, both in performance and power consumption.

Pun density aside, both Intel and AMD are pursuing a many-core strategy when it comes to the high-end desktop. Both manufacturers have the same story in their pockets: users need more multi-threaded performance, either for intense compute or for a heavy scoop of compute-based multi-tasking, to include streaming, encoding, rendering, and high-intensity minesweeper VR all at the same time. Due to having so many cores, single threaded performance while under load can be lower than usual, so both companies focus on throughput rather than responsiveness.

The Core i9-7980XE is Intel’s new top-of-the-line HEDT processor. Coming in at 18-cores and drawing 165W, this processor can reach 4.4 GHz at top turbo or 3.4 GHz on all-core turbo. At $1999, it becomes the most expensive (?) consumer focused processor on the market. It is priced at this level for two reasons: first such that it doesn’t cannibalize Intel’s enterprise sales which have a higher profit margin, but also due to Intel’s product stack it fills up several price points from $300 all the way to $2000 now, and with it being Intel’s best consumer processor, they are hoping that it will still sell like hot cakes.

Our performance numbers show that Intel’s best multi-core consumer processor is deserving of that title. In most of our multi-core tests, Intel has a clear lead over AMD: a combination of more cores and a higher single threaded performance compensates for any frequency difference. For anyone with hardcore compute, Intel gets you to the finishing line first in almost every scenario. AMD does win on a few benchmarks, which is something we saw when Johan tested the enterprise versions of Intel's and AMD's CPUs in his review, where he cited AMD’s FP unit as being the leading cause of the performance improvement.

There are going to be three cautionary flags to this tale based on our testing today, for anyone looking at Skylake-X, and they all start with the letter P: Power, Platform, and Price.

Power: In our testing, Intel’s cores can consume between 20W and 7.5W per core, which is a large range. When all cores are at load, as well as the mesh and DRAM controllers, the Core i9-7980XE draws over 190W, well above the TDP rating of 165W. This will cause concern for users that take the TDP value as rote for power consumption – and for any users thinking of overclocking it might also be worth investing in custom cooling loops. The processors from AMD consume ~177W at load, which for two cores less is about the same ballpark.

Platform: X299 motherboards are designed to handle Kaby Lake-X, Skylake-X LCC and Skylake-X HCC processors. Almost all the motherboards should be geared towards the high-end processors which makes platform compatibility a bit of a non-issue, however testing by others recommends some form of active cooling on the power delivery. When investing $1999 in a processor, especially if a user is considering overclocking, it is likely that a good motherboard is needed, and not just the bargain basement model. Some users will point to the competition, where AMD's processors offer enough lanes for three x16 GPUs and three PCIe 3.0 x4 storage devices from the processor at the same time, rather than reduced bandwidth for 3-way and requiring storage to go through the chipset.

Price: $1999 is a new record for consumer processors. Intel is charging this much because it can – this processor does take the absolute workstation performance crown. For high performance, that is usually enough – the sort of users that are interested in this level of performance are not overly interested in performance per dollar, especially if a software license is nearer $10k. However for everyone else, unless you can take advantage of TSX or AVX-512, the price is exorbitant, and all arrows point towards AMD instead. Half the price is hard to ignore.

Users looking at the new processors for workstation use should consider the three Ps. It’s not an easy task, and will highly depend on the user specific workflow. The recommendations ultimately come down to three suggestions:

  • If a user needs the top best workstation processor without ECC, then get Skylake-X.
  • If a user needs ECC or 512GB of DRAM, Xeon-W looks a better bet.
  • If a user has a strict budget or wants another GPU for compute workloads, look at Threadripper.

For those weighing up the Core i9-7960X compared to the Core i9-7980XE, part of me wants to say ‘if you’re going for cores and prepared to spend this much, then go all the way’. If the main purpose is throughput, for the benchmarks that matter, the 7980XE is likely to provide benefit. For multi-taskers, the benefits are less clear, and it would be interesting to get the Core i9-7940X and Core i9-7920X in for testing.

Performance Per Dollar Analysis
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  • mmrezaie - Monday, September 25, 2017 - link

    unofficially threadripper supports ECC. Do you have the plan to look into it?

    p.s. I sent an email to Anandtech support about abusive ads directing to some questionable websites. I am in EU and I see these ads for a long time now.
    Reply
  • Ryan Smith - Monday, September 25, 2017 - link

    "p.s. I sent an email to Anandtech support about abusive ads directing to some questionable websites. I am in EU and I see these ads for a long time now."

    Er, we don't have a support email address. So I'm not sure who you sent that to.

    Anyhow, we're always trying to squash malvertising. It comes in on programmatic ads, which does make the process tricky. But if you can get it to reliably and repeatedly trigger, please contact me. If we can get network logs collected, then we can isolate the source and get said ads pulled.
    Reply
  • mmrezaie - Monday, September 25, 2017 - link

    I sent it to advertisement link I found in the "contact us" page. Sorry by saying support. That's what we call it in our organization. thanks for the reply. Reply
  • snowmyr - Monday, September 25, 2017 - link

    Check that link again and you'll see that it's not really an anandtech email address and might not get forwarded to the right people. Reply
  • mmrezaie - Monday, September 25, 2017 - link

    I sent it to advertisement link I found in the "contact us" page. Sorry by saying support. That's what we call it in our organization. thanks for the reply. Reply
  • AdditionalPylons - Monday, September 25, 2017 - link

    Just sent you a tweet with a screenshot, Ryan. I've been very annoyed with these clickbait ads for a
    very long time as well.
    Reply
  • hughc - Monday, September 25, 2017 - link

    Wasn't sure what you were referring to. I have AdBlock whitelisting the domain, so I see all the display advertising.

    I'm also using ClickbaitKiller. Disabled it, and now I can see the unit in question - very happy to hide this trash.
    Reply
  • thesavvymage - Monday, September 25, 2017 - link

    I get inappropriate ads as well. I'm not sure where I can send a screenshot, but the one I have on this page under the article is "This Is Better Than Adderall, According to US College Students. Try It!"

    Like what? This is a professional tech site and ads like that have no business being on here. Banner ads for tech companies? Good. Side ads for relevant products? Good. This BS thats always underneath every article? Absolutely unacceptable.
    Reply
  • Gothmoth - Monday, September 25, 2017 - link

    do you really think anandtech cares how they make money.. maybe when anad was still here.

    i see these ads too, a website who cares about it´s reputation would distance itself from such crap.. but not anandtech.
    Reply
  • ddriver - Monday, September 25, 2017 - link

    "maybe when anad was still here" LOL, if he didn't care about money, he'd not sell the site to money makers for money. That's the N1 business model, and the sole motivation for doing anything - get it to get popular, then sell it out, and all its users with it. Reply

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