3 ms·
That performance hit doesn't necessarily exist on a given workload, because the hysteria over downclocking was mainly with the very early desktop implementation
by mhh__ 5y ago
That performance hit doesn't necessarily exist on a given workload, because the hysteria over downclocking was mainly with the very early desktop implementations of AVX-512. You'd have to measure it and see nowadays (and consider that the downclocking may be simply due to yourself actually using all the execution units at once)
- ComputerGuru 5y agoWhether the hit is there or not is besides the point so long as it's perceived to be there by a not insignificant portion of the developers that might otherwise chase after an AVX-512 implementation. (Citation needed for my initial claim that the perception of the performance hit exists within that population.)