Yes, the Core i5 760 does support SSE4.1. So it was indeed SSE4.x that you wanted.
Since the emulator requires two fast cores, Intel is better anyway (AMD gives more slower cores for the price usually).
This is temporary until AMD releases much better CPUs with SSE4.1 in April (Bulldozer) but as you are buying now I would say go Intel but don't go $100 out of your way to do it if you see what I mean.









