Quote:
Originally Posted by benwaggoner
And so far, AVX512 in x265 has only been demonstrated to be helpful on Intel systems doing UHD at slower+ presets...
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A simple test with 4K video downscaled to 1080p with avs+ and passed to x265 with avs2yuv, preset slower + ctu 32, AVX2@4500, AVX512@4500:
AVX2 - 7.08 fps
AVX512 - 7.87 fps
Another 1080p encoding with the same preset slower + ctu 32:
AVX2 - 7.68 fps
AVX512 - 8.08 fps
Also:
AVX2 ~ 290W
AVX512 ~ 250W
I'm using adaptive offset for vcore. So my vcore is 1.24v for @4800 (non-avx) and when encoding with AVX2 my core speed is @4500 but vcore remains the same 1.24v. When encoding with AVX512 my core speed is @4500 and vcore is 1.13v.