I'm using phenom2 x4 where final cut pro x was not supposed to work, because of the SSSE3 instructions!!! I don't have a clue, but i got it working, without patching anything!!! I mean I could even load a movie in it!! I messed up with some other things, after re-installation of OS X, its not working anymore. I'm using legacy kernel 10.8 with MSI mobo and phenom 2 x4 965. That means there should be a way out, if it did work once!!! I leave this to you tech gurus, just wanted to let you know that it did run on an AMD cpu, so...may be you can find out!!