Anon (anon.delete@this.anon.com) on December 16, 2019 4:50 pm wrote:
> juanrga (noemail.delete@this.juanrga.com) on December 16, 2019 2:19 am wrote:
> > There is no commercial implementation. It was just a recent TSMC demo of the
> > possibilities of the 7HPC node. Four A72 cores were pushed up to 4.2GHz
> >
> > https://fuse.wikichip.org/news/2446/tsmc-demonstrates-a-7nm-arm-based-chiplet-design-for-hpc/
> >
> > SKL/Zen cannot be used in phones.
> >
> > Moreover, the demo disproves to all those that during years
> > said that Cortex cores couldn't pass 3GHz because... potato
>
> I do not remember of anyone saying ARM couldn't reach 4GHz

I do.

> but I do remember someone saying ARM
> couldn't reach 4GHz on low power/high density process, and your link proves they were right.

HPC node was just designed for those higher clocks.

> With high performance library and process 4 A72 cores with just 6MB L3 takes 27mm², a Zen2 chiplet
> on same chiplet but with 8 cores and 32MB L3 takes 74mm², about same "per core" area;

ROFL. No

> So, yes, with high performance library and process ARM can reach 4GHz,
> but there is a price, when doing so the core won't be so small.
>