>>183
SSE lacks the instructions to do the needed operations on its 128 bit registers, out of all of the additional instruction sets I can think of SSE2 is the only one that fit (I only know x86 chipsets). Maybe I didn't state it cleary, but I said you would not be likely to gain more than just being able to do two times as many as once. Not exactly something that is going to bring something that is currently an unreasonable search to feasability.