Quote Originally Posted by dess View Post
BTW, AFAIK there must be also an update to come to enable FMA4 and XOP under Win7 (just like AVX were enabled by SP1).
No, it was needed for AVX because it introduced new/wider registers. The OS has to save these between context switches now, too. Think about what would happen if the OS forgets to save your data ... *g*

XOP and FMA4 however do not introduce new registers, they use the SSE or AVX' registers, therefore no extra patch needed - as long as the AVX patch is in place everything is fine.