multicore isn't multiprocessor. There are some issues with the way that The intel instruction set (and the code in the OS used to run it) runs on AMD systems. AMD has filed an anti trust lawsuit and the two companies have entered into negotiations in order to solve the hardware aspect of the issue. In most cases, this won't be overtly apparent, but in processor intensive situations, such as 3D and games, it shows up with some interesting odd quirks here and there. Programs which take advantage of Intel's hyperthreading actually function worse and may introduce errors in complex calculations when run under AMD chips -- and the reverse is true as well -- becuase of this issue. In manfuacturing, where an error in a calculation can be the difference between life and death, this becomes a pretty serious issue, and it has affected high end applications already. Ergo -- wait a bit.

thou and I, my friend, can, in the most flunkey world, make, each of us, one non-flunkey, one hero, if we like: that will be two heroes to begin with. (Carlyle)