By: Anon (no.delete@this.spam.com), April 9, 2021 10:06 am
Room: Moderated Discussions
juanrga (nomail.delete@this.juanrga.com) on April 9, 2021 3:44 am wrote:
> Cortex A72 achieving 4.2GHz on 7HPC:
>
> https://fuse.wikichip.org/news/2446/tsmc-demonstrates-a-7nm-arm-based-chiplet-design-for-hpc/
Thanks, very interesting, so:
1) 4 A72 cores and 6MB L3 taking 27.28mm², so high performance transistors does indeed are a lot less dense, all those claims about small high perf ARM cores are just bullshit;
2) 1.375V to reach 4.2GHz, Zen 3 reaches 4.9GHz at that voltage, and the last 200MHz needed 0.175 extra volts, no way for a CPU like M1 or N1 going much futher than 3GHz.
> Cortex A72 achieving 4.2GHz on 7HPC:
>
> https://fuse.wikichip.org/news/2446/tsmc-demonstrates-a-7nm-arm-based-chiplet-design-for-hpc/
Thanks, very interesting, so:
1) 4 A72 cores and 6MB L3 taking 27.28mm², so high performance transistors does indeed are a lot less dense, all those claims about small high perf ARM cores are just bullshit;
2) 1.375V to reach 4.2GHz, Zen 3 reaches 4.9GHz at that voltage, and the last 200MHz needed 0.175 extra volts, no way for a CPU like M1 or N1 going much futher than 3GHz.
