Advanced Micro Devices Inc (AMD)

[dacaw]

Anandtech's SSE3 test

Anandtech did its test on old xp32, not Windows XP64. The software was then 32-bit and only had 8 SSE regs to work with.

I've profiled SSE sequences and its clear that its register limitations that stall execution. There may be a small improvment due to less instructions using some SSE3 sequences, but a profile will shows that most of the time the instruction can't be retired because its waiting on some earlier result in one of the 8 registers.

This may not be the case with 64-bit code since there are 16 rather than 8 SSE registers.

The results from Anandtech show nothing about 64-bit code. Now that will be interesting.