Adrian (a.delete@this.acm.org) on June 16, 2022 9:27 am wrote:
> Eric Fink (eric.delete@this.anon.com) on June 16, 2022 5:46 am wrote:
> > Adrian (a.delete@this.acm.org) on June 16, 2022 2:09 am wrote:
> > > Apple's own presentation of last week showed that the new M2 has only 87% of the single-thread
> > > performance of i7-1260P, which is not supposed to be the top of Alder Lake P (that
> > > would be i7-1280P, but it does not appear to be available anywhere).
> >
> > Highest single-core GB5 scores for i7-1280P seems to be around 1800, for i9-12900HK around
> > 1890-1900. And I am talking about highest, not average or median scores, so that's the best
> > possible case. Would love to see SPEC, but I count find any reviews using the SPEC suite.
>
>
> Any GB5 scores for i7-1280P at around 1800 are just wrong.
>
> The GB5 database is swamped by bad results obtained on misconfigured Windows computers. Now it has become
> much more difficult to identify the correct results than before, because the database Web site no longer allows
> anyone to see the complete benchmark results, for example to check the clock frequencies during the tests,
> but it requires a registered account for that. I will not bother to make an account at them, just to be able
> to see the complete benchmark results, in order to be able to filter the fake or wrong results.
>
> Nevertheless, there is no doubt that 1800 is wrong, because that is the score that
> I get on a Zen 3 @ 4.8 GHz (no overclocking, no PBO, slower memory than standard;
> Zen 3 with standard memory gets around 1810 @ 4.8 GHz and around 1850 @ 4.9 GHz).
>
> i7-1280P is Alder Lake @ 4.8 GHz, which must obtain a ST GB5 score higher than Zen 3 by 15% to
> 20%, so it should obtain a score around 2100. ST GB5 scales very well with the clock frequency,
> so an i9-12900HK @ 5.0 GHz must obtain a score not much less than 2200. For desktop Alder Lake
> there are indeed many results in the database around 2200, which must be the right ones.

I couldn't find any result > 2000 for 12900HK.
I found this one at 1926: https://browser.geekbench.com/v5/cpu/14211317
And it shows frequencies at 49xx MHz in the .gb5 file.

>
>
> >
> > I have no idea why anyone would claim that M2 has only 87% single-threaded performance of
> > i7-1260P where already M1 is faster than i7-1260P. Maybe something was lost in translation.
> > Are you sure they were not comparing it to the desktop ADL? That would make more sense.
>
> That they have compared with i7-1260P is completely certain. Even when looking
> only at the large titles and not at the small print, the Intel CPU was identified
> as a "12-core laptop CPU", which matches nothing else but i7-1260P.
>
>
> >
> >
> > > In single-threaded tasks, Apple M2 does not have any chance against Alder Lake,
> > > because Alder Lake has reduced the difference in IPC in favor of M2 to around 30%,
> > > which is not enough to compensate the 50% frequency advantage of Alder Lake.
> >
> > Well you say that, but that's not what the benchmarks tell.
> >
>
> The benchmark published by Apple themselves tells precisely that.
>
> It is beyond any reasonable doubt that the Apple benchmark result, obtained by professionals with perfect
> knowledge about M2, is much more trustworthy than 100 or 1000 GB5 results uploaded by some random dudes,
> who do not have the slightest idea about what programs are installed on their Windows machines, which run
> concurrently with the supposedly single-thread GB5 benchmark, decreasing the benchmark score.
>
> It is beyond any reasonable doubt that Apple would have claimed a higher performance
> than 87% of the speed of Alder Lake @ 4.7 GHz, if that were true.
>
>
>