Comment by fancyfredbot
Comment by fancyfredbot 10 hours ago
Intel disabled optimisations when they detected they were running on their competitors hardware. The motivation was to make competitors compare badly in benchmarks.
Nvidia are disabling optimisations on their own hardware. The motivation appears to be related to these optimisations being unsafe to apply to general code.
Let's be clear here. Intel searched for "GenuineIntel" and ran optimized code on their hardware.