Comment by snvzz

If you're talking physical chips you can buy off the shelf, sure.

But if you're talking IP, which would be what matters for the argument being made (core IP to use on new design), here's where we at (thanks to camel-cdr- on reddit[0]):

(rule of thumb SPEC2006*10 = SPEC2017)

SiFive P870-D: >18 SpecINT2006/GHz, >2 SpecINT2017/GHz

Akeana 5300: 25 SpecINT2006/GHz @ 3GHz

Tenstorrent Ascalon: >18 SpecINT2006/GHz, IIRC they mentioned targeting 18-20 at a high frequency

Some references for comparing:

Apple M1: 21.7 SpecINT2006/GHz, 2.33 SpecINT2017/GHz

Apple M4: 2.6 SpecINT2017/GHz

Zen5 9950x: 1.8 SpecINT2017/GHz

Current license-able RISC-V IP is certainly not slow.

0. https://www.reddit.com/r/hardware/comments/1gpssxy/x8664_pat...