By: Adrian (a.delete@this.acm.org), November 17, 2020 1:41 pm
Room: Moderated Discussions
sr (nobody.delete@this.nowhere.com) on November 17, 2020 11:39 am wrote:
> Dummond D. Slow (mental.delete@this.protozoa.us) on November 16, 2020 6:22 pm wrote:
>
> > Uh? Whether the MT score is good or bad, that absolutely depyends on the power consumed.
> > If it does better then say the octocore Ryzen 4800U (probably most efficient laptop chip for this task on
> > x86 side, ATM) in the particular power envelope, be it 10W or 15W or whatever, that is a good result.
> > If it does worse but at proportionally lower power, also good result.
> >
> > If the AMD beats M1 at the same or even better power = bad result for Apple.
> > And that could all happen with the exact same 7500 points score the M1 achieves. What
> > that number means absolutely depends on the power consumed... Not sure what is not
> > to understand, performance-per-watt is ultimately the name of the game in these multithreaded
> > tasks. It's like with GPUs, ultimately your performance is TDP-limited.
>
> Not against 4800U but against previous Apple laptops power efficiency is about 10
> times better at high loads while simultaneously offering better performance:
>
> yeah-apples-m1-macbook-pro-is-powerful-but-its-the-battery-life-that-will-blow-you-away/
>
> Wonder if it's good enough or should Apple have stayed with x86.....
Of course the new Apple computers with M1 are much better than what they are replacing (except for the lower memory capacity and number of I/O ports).
However, that was an extremely low bar to pass, because Apple computers were notorious in recent years for their low performance compared to alternatives.
The comparisons with the older Apple products are useful for the Apple customers, to insure them that an upgrade is desirable, but they are completely useless for those who currently are not Apple customers.
For the latter, only the comparisons with Intel Tiger Lake, AMD Renoir and AMD Zen 3 are useful.
Compared to Intel Tiger Lake and AMD Zen 3, the differences in single-thread CPU performance are too small to have any practical consequence, so the right conclusion is that all these 3 processors have approximately the same single-thread performance, but the Apple M1 achieves it at a much lower power consumption and clock frequency.
> Dummond D. Slow (mental.delete@this.protozoa.us) on November 16, 2020 6:22 pm wrote:
>
> > Uh? Whether the MT score is good or bad, that absolutely depyends on the power consumed.
> > If it does better then say the octocore Ryzen 4800U (probably most efficient laptop chip for this task on
> > x86 side, ATM) in the particular power envelope, be it 10W or 15W or whatever, that is a good result.
> > If it does worse but at proportionally lower power, also good result.
> >
> > If the AMD beats M1 at the same or even better power = bad result for Apple.
> > And that could all happen with the exact same 7500 points score the M1 achieves. What
> > that number means absolutely depends on the power consumed... Not sure what is not
> > to understand, performance-per-watt is ultimately the name of the game in these multithreaded
> > tasks. It's like with GPUs, ultimately your performance is TDP-limited.
>
> Not against 4800U but against previous Apple laptops power efficiency is about 10
> times better at high loads while simultaneously offering better performance:
>
> yeah-apples-m1-macbook-pro-is-powerful-but-its-the-battery-life-that-will-blow-you-away/
>
> Wonder if it's good enough or should Apple have stayed with x86.....
Of course the new Apple computers with M1 are much better than what they are replacing (except for the lower memory capacity and number of I/O ports).
However, that was an extremely low bar to pass, because Apple computers were notorious in recent years for their low performance compared to alternatives.
The comparisons with the older Apple products are useful for the Apple customers, to insure them that an upgrade is desirable, but they are completely useless for those who currently are not Apple customers.
For the latter, only the comparisons with Intel Tiger Lake, AMD Renoir and AMD Zen 3 are useful.
Compared to Intel Tiger Lake and AMD Zen 3, the differences in single-thread CPU performance are too small to have any practical consequence, so the right conclusion is that all these 3 processors have approximately the same single-thread performance, but the Apple M1 achieves it at a much lower power consumption and clock frequency.