AMD embraces AVX making a new superset with SSE5(256bit support)

[Hans de Vries]

That has changed now AVX and FMA is considered different. AVX will come in SB but FMA will come in its shrink. It will be 256bit wide but using 128bit x2 route its easy to implement.

Hi Igor,

Sandy Bridge will not have FMA, it's targeted for a future processor. I apologize if there is any confusion I (or Intel) caused. In our defense, we did discuss feature timing in the last two Intel developer forums (and now to my embarrassment, I see that presentation has been removed from the IDF content catalog at http://www.intel.com/idf , we'll have it up in time for the upcoming IDF on Oct 20). And it's on a separate CPUID feature flag (separate section of the document too ) in the programming reference.

Yes, it changed alright ajaidev

What I meant (and what Intel says here) is that AVX and FMA never were
supposed to be implemented at the same time. FMA was always targeted
for a later processor.


Regards, Hans