3 ms·

Sorry I take all these SiFive claims with a huge pinch of salt since they did this, comparing 7nm vs 10nm: https://twitter.com/dylan522p/status/141539541500081

• hajile 3y ago
  That's Samsung 10nm LP vs something something 7nm. Not the best comparison, but one that would still imply some amount of area advantage for stock 7nm nodes. A78 on SD845 used 64kb L1 vs 32kb L1 on P670 (a 32kb variant is available, but would get significantly worse performance relative to P670). Likewise, other things like the uop cache and 32-bit frontend add a lot to the size/power of A78 as ARM themselves bragged that their frontend got 75% smaller when they dropped the uop cache and 32-bit support in newer mid-core designs. I'd guess this frontend difference alone accounts for most of the area difference between the two.
  • klelatti 3y ago
    That sounds like a very fair comparison. And to be clear I was referring to SiFive's credibility in the comment above and not yours!