3 ms·
Doesn't Prime95 use AVX2 and FMA3 since version 28.5, which pushes Intel's power consumption higher? Can that be disabled?
by tutanchamun 10y ago
Doesn't Prime95 use AVX2 and FMA3 since version 28.5, which pushes Intel's power consumption higher? Can that be disabled?
- jhasse 10y agoYes, that's probably the reason for the increased power consumption. But Ryzen also supports AVX2, doesn't it?
- tutanchamun 10y agoAh yeah, remembered it false. I thought Ryzen had no AVX2, but actually it has it, but at half the speed.
- throwaway2048 10y agoHalf the width, 128bit vs 256bit. Often translates to half the speed but not always.
- hajile 10y agoRyzen is half as wide, but executes at full speed. Intel drastically reduces clockspeeds when executing AVX. http://www.intel.com/content/dam/www/public/us/en/documents/white-papers/performance-xeon-e5-v3-advanced-vector-extensions-paper.pdf http://www.intel.com/content/dam/www/public/us/en/documents/...