Quote:
Originally Posted by Boulder
At least with a first generation Ryzen, you'll want to disable AVX2 in the x265 command line. It's slightly faster that way.
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The Zen 2 architecture doubles the width of the datapath and the execution units to 256-bits which should double the performance of AVX2 on it vs. Zen.
The whole FPU got supersized in Zen 2 (vs. 1).
2x wider datapath (256-bit, up from 128-bit)
2x wider EUs (256-bit FMAs, up from 128-bit FMAs)
2x wider LSU (2x256-bit L/S, up from 128-bit)
from:
https://en.wikichip.org/wiki/amd/mic...tectures/zen_2