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SiFive's P550 Microarchitecture
- fschutze 2y agoNice to see a through discussion of such an interesting ISA and chip.
- voidbert 2y agoFrom what I understand, this core tries to ourperform the A75 in IPC whilst using less area. However, the P550 cores run at a lower frequency (1.4GHz) than the A75 (2GHz). I wonder if this optimization for area, like in Zen4c, makes it impossible to drive the core at a high frequency, hindering its maximum performance. Nonetheless, it's a great RISC-V core, especially when compared to what brands like SpaceMit and Alibaba T-Head offer.
- snvzz 2y ago>the P550 cores run at a lower frequency (1.4GHz) than the A75 (2GHz). The compared chips are 12nm vs 10nm, different chips on different fabs with different targets. One happens to be 1.4GHz and the other happens to be 2GHz. I wouldn't read any more than that.
- yencabulator 2y agoMore discussion at https://news.ycombinator.com/item?id=42839501 https://news.ycombinator.com/item?id=42839501