Zen 3

By: Adrian (a.delete@this.acm.org), October 10, 2020 1:59 am
Room: Moderated Discussions
Mr. Camel (no.thanks.delete@this.gmail.com) on October 9, 2020 6:30 pm wrote:
> Blue (blue.delete@this.blue.com) on October 8, 2020 9:58 am wrote:
> > AMD's announce Zen3 with an average of 19% IPC uplift "in desktop applications"
> > and about a 5-10% clockspeed boost (ST, MT unknown).
> >
> > Seems like they're rightfully pushing to up their margin.
> >
> > If AMD can keep up this 15-19% gains every generation, when do
> > the "big on ARM" folks think ARM will effectively catch up?
>
> How would an 8 core Zen 3 desktop chip compare to a desktop class 8 core Willow Cove chip?
>
> This assumes that a desktop Willow Cove could hit higher frequencies
> than the mobile version due to more thermal headroom.
>
>

The single-thread Cinebench showed Zen 3 @ 4.8 GHz as faster by 6% than Willow Cove (Tiger Lake) at the same 4.8 GHz.

So Rocket Lake (it is not known whether its Cypress Cove core is more similar to Willow Cove or to its predecessor from Ice Lake, but the differences between these 2 cores are small anyway) will have to reach at least 5.3 GHz to slightly exceed a 4.9 GHz Zen 3.


For multi-threaded applications an 8-core Rocket Lake will be limited to a lower base frequency than Comet Lake (because of doing more work per clock cycle) and it is unlikely that it would match even a 12-core Zen 2, and certainly it will be easily beaten by an 8-core Zen 3, due to its higher energy efficiency leading to higher clock frequencies when limited by the TDP. The low efficiency of Rocket Lake for power-limited MT tasks will be mitigated by 125 W vs. 105 W, but compared to Zen 3 this will not be enough.





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TopicPosted ByDate
Zen 3Blue2020/10/08 09:58 AM
  Zen 3Rayla2020/10/08 10:10 AM
  Zen 3Adrian2020/10/08 10:13 AM
    Does anyone know whether Zen 3 has AVX-512? (NT)Foo_2020/10/08 11:54 AM
      Does anyone know whether Zen 3 has AVX-512?Adrian2020/10/08 12:11 PM
  Zen 3 - Number of load/store units2020/10/08 10:21 AM
    Zen 3 - Number of load/store unitsRayla2020/10/08 10:28 AM
      Zen 3 - Number of load/store units2020/10/08 11:22 AM
        Zen 3 - Number of load/store unitsAdrian2020/10/08 11:53 AM
          Zen 3 - Number of load/store unitsTravis Downs2020/10/08 09:45 PM
          Zen 3 - CAD benchmarkPer Hesselgren2020/10/09 07:29 AM
            Zen 3 - CAD benchmarkAdrian2020/10/09 09:27 AM
        Zen 3 - Number of load/store unitsitsmydamnation2020/10/08 02:38 PM
          Zen 3 - Number of load/store unitsGroo2020/10/08 02:48 PM
            Zen 3 - Number of load/store unitsWilco2020/10/08 03:02 PM
              Zen 3 - Number of load/store unitsDummond D. Slow2020/10/08 04:39 PM
                Zen 3 - Number of load/store unitsDoug S2020/10/09 08:11 AM
                  Zen 3 - Number of load/store unitsDummond D. Slow2020/10/09 09:43 AM
                    Zen 3 - Number of load/store unitsDoug S2020/10/09 01:43 PM
                      N7 and N7P are not load/Store units - please fix the topic in your replies (NT)Heikki Kultala2020/10/10 07:37 AM
  Zen 3Jeff S.2020/10/08 12:16 PM
    Zen 3anon2020/10/08 01:57 PM
    Disappointing opening line in paperPaul A. Clayton2020/10/11 06:16 AM
      Thoughts on "Improving the Utilization of µop Caches..."Paul A. Clayton2020/10/14 12:11 PM
        Thoughts on "Improving the Utilization of µop Caches..."anon2020/10/15 11:56 AM
          Thoughts on "Improving the Utilization of µop Caches..."anon2020/10/15 11:57 AM
            Sorry about the messanon2020/10/15 11:58 AM
              Sorry about the messBrett2020/10/16 03:22 AM
          Caching dependence info in µop cachePaul A. Clayton2020/10/16 06:20 AM
            Caching dependence info in µop cacheanon2020/10/16 12:36 PM
              Caching dependence info in µop cachePaul A. Clayton2020/10/18 01:28 PM
  Zen 3juanrga2020/10/09 10:12 AM
  Zen 3Mr. Camel2020/10/09 06:30 PM
    Zen 3anon.12020/10/10 12:44 AM
      Cinebench is terrible benchmarkDavid Kanter2020/10/10 10:36 AM
        Cinebench is terrible benchmarkanon.12020/10/10 12:06 PM
        Cinebench is terrible benchmarkhobold2020/10/10 12:33 PM
          Some comments on benchmarksPaul A. Clayton2020/10/14 12:11 PM
            Some comments on benchmarksMark Roulo2020/10/14 03:21 PM
    Zen 3Adrian2020/10/10 01:59 AM
      Zen 3Adrian2020/10/10 02:18 AM
        Zen 3majord2020/10/15 04:02 AM
  Zen 3hobold2020/10/10 08:58 AM
    Zen 3Maynard Handley2020/10/10 10:36 AM
      Zen 3hobold2020/10/10 12:19 PM
        Zen 3anon2020/10/11 02:58 AM
          Zen 3hobold2020/10/11 12:32 PM
            Zen 3anon2020/10/11 01:07 PM
              Zen 3hobold2020/10/11 02:22 PM
    Zen 3anon2020/10/10 11:51 AM
    Zen 3Michael S2020/10/11 01:16 AM
      Zen 3hobold2020/10/11 02:13 AM
        Zen 3Michael S2020/10/11 02:18 AM
      Zen 3anon.12020/10/11 12:17 PM
  Zen 3David Hess2020/10/12 06:43 AM
    more power? (NT)anonymous22020/10/12 01:26 PM
      I think he's comparing 65W 3700X vs 105W 5800X (NT)John H2020/10/12 04:33 PM
        ?! Those are apples and oranges! (NT)anon2020/10/12 04:49 PM
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