BTW, if anyone was curious about SSE/3DNow! Pro: Both are implementations of SIMD technology. SIMD is Single Instruction Multiple Data, and works on the idea that you can perform one operation on a large set of data faster than you can repeatedly perform that op on each piece of data in that set. Intel calls their SIMD implementation SSE, Streaming SIMD Extensions, and AMD calls their clone of Intel’s implementation 3DNow! Professional. Programs that require SSE will run on AMD processors that have 3DNow! Pro, as both implementations are compatible. AMD has yet to clone Intel’s SSE2 extensions, however. IBM has its own SIMD implementation on its G4 chips, called Altivec.