Zen 4c

By: Chester (lamchester.delete@this.gmail.com), November 9, 2022 9:12 pm
Room: Moderated Discussions
anonymou5 (no.delete@this.spam.com) on November 9, 2022 11:29 am wrote:
> > Zen 4c won't have any changes like that, it'll have the same netlist as a regular Zen 4 core
> > but with a different layout and gate sizings. It looks like the fruit of all that work they
> > did back in the Bulldozer days for improving automated layout to be able to just re-tune an
> > existing design to be smaller and more power efficient at the expense of clock speeds.
>
> remember these? :)
>
> https://www.flickr.com/photos/130561288@N04/50979269043/in/photolist-2kES5zA-2kES5Ax-2k774YV-2k6zcs4-2kCv4hs
> https://www.flickr.com/photos/130561288@N04/50979268988/in/photolist-2kES5zA-2kES5Ax-2k774YV-2k6zcs4-2kCv4hs

Further investigation in a Twitter thread (https://twitter.com/gpusaremagic/status/1439205765559066627) showed they had cut two of the FP pipes. However, register file capacity stayed the same
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TopicPosted ByDate
One 512-bit vector unit versus 2 256-bit vector units, re Zen 4 AVX-512Jeffrey Bosboom2022/11/04 06:18 PM
  Clarification?Mark Roulo2022/11/04 08:34 PM
    Expanded question about design pointsJeffrey Bosboom2022/11/04 10:37 PM
      Expanded question about design pointsAnon2022/11/04 10:53 PM
        Expanded question about design pointsJeffrey Bosboom2022/11/04 11:05 PM
          Expanded question about design pointsAnon2022/11/04 11:30 PM
            Expanded question about design pointsChester2022/11/05 04:24 PM
              Expanded question about design pointsAnon2022/11/05 04:43 PM
              Expanded question about design pointsLinus Torvalds2022/11/06 02:18 PM
                Expanded question about design pointsAdrian2022/11/07 04:38 AM
                  Expanded question about design pointsanon2022/11/07 12:34 PM
                    Expanded question about design pointsAdrian2022/11/08 04:34 AM
                      Expanded question about design pointsChester2022/11/08 08:29 AM
                      Expanded question about design pointsanon2022/11/08 09:01 AM
                        Expanded question about design pointsAdrian2022/11/08 09:53 AM
                          Expanded question about design pointsLinus Torvalds2022/11/08 11:35 AM
                            Expanded question about design pointsBrett2022/11/08 12:33 PM
                              Expanded question about design pointsBrett2022/11/08 12:48 PM
                              Expanded question about design points---2022/11/09 11:41 AM
                            Expanded question about design pointsAdrian2022/11/08 12:45 PM
                              Expanded question about design pointsLinus Torvalds2022/11/08 01:29 PM
                                Expanded question about design pointsanon2022/11/08 01:58 PM
                              Zen 4cJames2022/11/09 03:54 AM
                                Zen 4cAndrew Clough2022/11/09 05:59 AM
                                  Zen 4canonymou52022/11/09 12:29 PM
                                    Zen 4cChester2022/11/09 09:12 PM
                            Expanded question about design pointsBjörn Ragnar Björnsson2022/11/08 09:24 PM
                              FP Adders are not so cheap compared to FP multipliersHeikki Kultala2022/11/09 09:07 AM
                                FP Adders are not so cheap compared to FP multipliersBjörn Ragnar Björnsson2022/11/10 12:10 AM
                          Expanded question about design pointsAnon2022/11/08 06:31 PM
      Expanded question about design pointsAdrian2022/11/05 03:00 AM
        Expanded question about design pointsAnon2022/11/05 03:27 AM
          Expanded question about design pointsAdrian2022/11/05 03:50 AM
            Expanded question about design pointsAnon2022/11/05 04:10 AM
              Expanded question about design pointsAdrian2022/11/05 07:34 AM
        Expanded question about design pointshobold2022/11/06 04:48 AM
          Expanded question about design pointsAdrian2022/11/07 04:19 AM
            Expanded question about design pointsAdrian2022/11/07 09:07 AM
  One 512-bit vector unit versus 2 256-bit vector units, re Zen 4 AVX-512Anon2022/11/04 08:49 PM
  One 512-bit vector unit versus 2 256-bit vector units, re Zen 4 AVX-512noko2022/11/04 09:49 PM
  One 512-bit vector unit versus 2 256-bit vector units, re Zen 4 AVX-512Brendan2022/11/05 02:07 AM
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