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Old 14th April 2018, 10:59   #6034  |  Link
RieGo
Registered User
 
Join Date: Nov 2009
Posts: 59
i'm seeing very inconsistent results

CRF-20 preset-"medium"
--------------------
Run1:
encoded 1128 frames in 27.42s (41.14 fps), 3355.47 kb/s, Avg QP:20.21
Run2 (AVX512):
encoded 1128 frames in 30.23s (37.32 fps), 3355.47 kb/s, Avg QP:20.21
Run3:
encoded 1128 frames in 27.77s (40.62 fps), 3355.47 kb/s, Avg QP:20.21
Run4 (AVX512):
encoded 1128 frames in 27.04s (41.71 fps), 3355.47 kb/s, Avg QP:20.21

but temps are still very low on avx512. i didn't expect this. probably x265 just uses very little avx512 and that's why we don't see much improvement - if any - running on lowered frequency.
maybe we can run at default speed without getting too much heat/power, if we only use it on x265... i'll give it a try

btw: i agree that avx512 is not worth getting a new cpu
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