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Old 15th October 2018, 12:16   #6425  |  Link
Atak_Snajpera
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Join Date: May 2006
Location: Poland
Posts: 7,806
Quote:
Originally Posted by DotJun View Post
I tried a short test clip with avx512 enabled and disabled on a 4K source using the slower preset. FPS went up to 1.37 from 0.84 when I enabled 512.

Encoded clip looks good, no obvious errors that is. File size is roughly the same, but clip length and crf might have something to do with the tiny difference between the two.

64bit x265 on an intel 7820x. Temps are roughly equal to when 512 is disabled. Load is mostly at 100% on all cores with the occasional dip down to 87% every minute or so.
You should encode whole movie (130k frames) instead of ultra short clip with few hundred of frames.
The longer you encode the more heat your cpu will produce and hence more aggressive AVX negative offset will be activated.
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