2 ms·
AVX and AVX512 both do downclocking. Likely AMD will have to downclock too, pretty fundamental limits at work there.
by gameswithgo 8y ago
AVX and AVX512 both do downclocking.
Likely AMD will have to downclock too, pretty fundamental limits at work there.
- bitL 8y agoWith 7nm they might not need to downclock that much.
- hajile 8y agoAMD verified they would be running AVX2 at full clocks. Doing AVX-512 would happen at half-rate, but the processor would continue at full speed. In contrast, skylake downclocks base clocks by 30+%. Not only does the AVX calculation downclock, but all the other calculations in other ALUs/FPUs also downclock. For pure AVX-512 workloads, Intel would be a little faster, but for mixed loads, AMD should be much faster overall. AMD says they don't downclock AVX2 (about 2/5 down the page) https://www.anandtech.com/show/13578/naples-rome-milan-zen-4-an-interview-with-amd-cto-mark-papermaster https://www.anandtech.com/show/13578/naples-rome-milan-zen-4... See page 13 for AVX clockspeeds https://www.intel.com/content/dam/www/public/us/en/documents/specification-updates/xeon-scalable-spec-update.pdf https://www.intel.com/content/dam/www/public/us/en/documents...