AVX2 and AVX-512 frequencies for W-2014

By: Adrian (a.delete@this.acm.org), August 15, 2018 12:17 am
Room: Moderated Discussions
Travis (travis.downs.delete@this.gmail.com) on August 14, 2018 8:37 pm wrote:
> Anyone happen to know the AVX2 and AVX-512 frequencies for the W-2104 Skylake chip?
>
> It has nominal speed of 3.2 GHz, and no turbo-boost, but isn't clear if the frequency is slower for AVX2
> and AVX-512 execution like it is for most of the other W chips (which largely also have turbo).
>
> Intel is not very forthcoming with this information on ARK.


You have probably seen that Anandtech has just published all the turbo frequencies for most Xeon W models, but not for this one.

Until this information became public, I had conservatively assumed that those turbo frequencies might resemble to those of the similar Xeon Gold models.

Now, we know that the turbo frequencies for Xeon W are much higher, which is understandable, because with 2 disabled memory channels and with disabled inter-socket links, there is more power available for the cores. For example, for W-2125 I expected the all-core AVX-512 turbo frequency to be at least 3.4 GHz, but it really is 3.9 GHz.



I have no idea which are the frequencies for W-2104, but a reasonable supposition would be 3.0 GHz for AVX2 and 2.8 GHz for AVX-512.

For an only 4-core processor, it is very unlikely that lower frequencies would be needed.


Another likely possibility is that it matches the behavior of W-2123. In that case the AVX-512 and AVX2 frequencies would be the same, but 3.1 GHz would be the 2-core AVX2/-512 frequency and 3.0 GHz would be the 4-core AVX2/-512 frequency.














< Previous Post in ThreadNext Post in Thread >
TopicPosted ByDate
AVX2 and AVX-512 frequencies for W-2014Travis2018/08/14 08:37 PM
  Should say W-2104 (NT)Travis2018/08/14 08:50 PM
  AVX2 and AVX-512 frequencies for W-2014Adrian2018/08/15 12:17 AM
    AVX2 and AVX-512 frequencies for W-2014Travis2018/08/15 12:52 PM
      AVX2 and AVX-512 frequencies for W-2014Jeff S.2018/08/16 06:19 AM
        AVX2 and AVX-512 frequencies for W-2014Travis2018/08/16 09:09 AM
        AVX2 and AVX-512 frequencies for W-2014Travis2018/08/23 11:25 PM
      AVX2 and AVX-512 frequencies for W-2014Adrian2018/08/16 11:31 PM
        AVX2 and AVX-512 frequencies for W-2014Travis Downs2018/08/17 08:16 AM
          AVX2 and AVX-512 frequencies for W-2014Adrian2018/08/17 10:29 AM
            AVX2 and AVX-512 frequencies for W-2014Travis2018/08/19 11:40 AM
    AVX2 and AVX-512 frequencies for W-2104Travis2018/08/23 10:49 PM
      AVX2 and AVX-512 frequencies for W-2104Adrian2018/08/24 02:32 AM
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