SPEC - Single-Threaded Performance

Single-thread performance of server CPUs usually isn’t the most important metric for most scale-out workloads, but there are use-cases such as EDA tools which are pretty much single-thread performance bound.

Power envelopes here usually don’t matter, and what is actually the performance factor that comes at play here is simply the boost clocks of the CPUs as well as the IPC improvement, and memory latency of the cores. 

SPEC2017 Rate-1 Estimated Total

What’s interesting in the results is the single-core performance of the 7443 and 7343 tracking extremely close to the frequency-optimised 72F3 and 75F3 parts. Indeed, the actual boost frequencies between the SKUs are quite similar, so there really wasn’t any particular reasons why the lower-core “regular” units wouldn’t perform similarly to their “core-performance” optimised parts.

It’s again notable that unlike Intel’s SKUs, going for lower core count parts on AMD EPYC 7003 series actually results in better single-threaded performance, with higher boost frequencies than the large core-count parts.

SPEC - Multi-Threaded Performance - Aggregate SPEC - Per-Core Performance under Load
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  • DannyH246 - Thursday, July 1, 2021 - link

    lol - no need to be subtle about it. www.IntelTech.com has been doing this for years.
  • Qasar - Thursday, July 1, 2021 - link

    hilarious, go back to wccftech then danny
  • whatthe123 - Friday, June 25, 2021 - link

    good god man, the review quite literally posts hard numbers of epyc simply thrashing xeon in performance even on a per core basis, and you think they're worried that intel will retaliate against them if they don't say something nice about one corner of a segment of performance?

    what is it about technology that attracts cultists?
  • Threska - Saturday, June 26, 2021 - link

    There's a reason the PCMasterRace forum exists.
  • msroadkill612 - Sunday, June 27, 2021 - link

    "Cultists" - I like it :)

    So true, & on many levels. I see strangely neurotic behaviour from such an allegedly smart & rational demographic.

    As a group, they are prone to be great at rattling off streams of presumably accurate numbers and jargon, but arrive at childishly naive conclusions, & ask the wrong questions based plain wrong premises.
  • devione - Sunday, June 27, 2021 - link

    Jesus Christ man. Grow some fucking balls. If you're going to call out Anandtech for being biased at least be straightforward and frank. No need to write an essay trying to couch and justify and be obtuse about it
  • Makste - Monday, July 5, 2021 - link

  • Oxford Guy - Friday, June 25, 2021 - link

    What are the RAM timings? I don’t see that information in the charts.
  • Andrei Frumusanu - Saturday, June 26, 2021 - link

    These are standardised PC4-3200AA-RB2-12 sticks, running at JEDEC timings.

  • Oxford Guy - Monday, June 28, 2021 - link

    Thank you. And the other systems tested?

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