This was a comparison to put the "high clock" in context

By: Dummond D. Slow (mental.delete@this.protozoa.us), April 20, 2020 8:55 am
Room: Moderated Discussions
David Kanter (dkanter.delete@this.realworldtech.com) on April 19, 2020 7:27 pm wrote:
> Dummond D. Slow (mental.delete@this.protozoa.us) on April 18, 2020 9:27 am wrote:
> > another anon (not.delete@this.person.com) on April 17, 2020 11:13 pm wrote:
> > >
> > > Well, AMD's Renoir 4C/4T Ryzen 3 4300U has a base frequency of 2700Mhz at 15W. If they felt like
> > > playing in the 28W space directly, one would think they might be able to have a fairly compelling
> > > product with either way higher base clocks or many more cores/threads at a similar power level.
> > > So calling Coffee Lake best in class might not be the best description any more.
> > >
> >
> > AMD has 8 cores 16 threads at 3.0 Ghz base and 4.3 GHz (or perhaps 4.4
> > not advertised, it's not clear) maximum boost in 35W (Ryzen 9 4900HS).
> >
> > It's the same design as their 15W chips just with scaled up power draw limits, so yeah.
>
> I have no interest in 8C chips for client systems. 4C/8T is pretty much optimal.
>
> This gets at the fundamental problem for AMD. More cores is
> valuable for some servers, and almost no client systems.
>
> As an educated consumer, I want a small number of fast cores.
>
> David

As an educated customer, I'd want energy efficiency too so that the fan doesn't spin up when CPU is loaded as much and so on. If I just went after maximum single thread performance, I could end up with some turbocharged Skylake at 4,9-5,3 GHz that probably draws over 25W in single thread.

My point was something else though: assuming 28W TDP, that 3 GHz base clock on a quadcore isn't that impressive if AMD can get close to that with eight cores. I don't know the IPC of Tiger Lake but it's unlikely to be say 40 % better than Zen 2, so it looks the power efficiency of Tiger Lake & 10nm Intel process still isn't something stellar. Well, it's years late compared to some original plans, so that should not be too surprising.
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Tiger lake leak, Intel 10nm fixed?Tiger Lake Leaks2020/04/14 09:30 AM
  Tiger lake leak, Intel 10nm fixed?anon2020/04/14 08:08 PM
    Tiger lake leak, Intel 10nm fixed?Wes Felter2020/04/15 02:46 PM
      Keep in mind Intel supposedly fixed their 10nm process at the same time TSMC is ramping up 5nm (NT)anon2020/04/23 10:14 PM
  28+ Wme2020/04/15 07:42 PM
    28+ WDavid Kanter2020/04/17 09:12 AM
      28+ Wanother anon2020/04/17 11:13 PM
        28+ WDummond D. Slow2020/04/18 09:27 AM
          28+ WDavid Kanter2020/04/19 07:27 PM
            28+ WAnon2020/04/19 08:47 PM
              28+ WDavid Kanter2020/04/19 09:50 PM
                28+ Wanny2020/04/20 05:56 AM
                28+ WAnon2020/04/20 08:03 AM
                28+ Wwumpus2020/04/20 02:39 PM
                  EPYC F lineAnon2020/04/20 05:35 PM
              28+ Wgallier22020/04/19 11:44 PM
              28+ WAlberto2020/04/20 09:07 AM
                28+ WAdrian2020/04/20 09:55 AM
                28+ WAnon2020/04/20 02:18 PM
                  28+ WAnon32020/04/20 04:02 PM
                  28+ WDummond D. Slow2020/04/20 09:05 PM
            28+ WAdrian2020/04/20 03:54 AM
            This was a comparison to put the "high clock" in contextDummond D. Slow2020/04/20 08:55 AM
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