> OS X is quite capable of managing a mixed processor resource. Apple has a history of cutting off "old" technology that they have decided will be superseded by something else. For Apple PowerPC is dead, so even if it were possible, I doubt they would do it. But out of curiosity: where did you find the above information? I doubt it in the SMP-sense. That would certainly not be an SMP system, but more like the OS running on one type of CPUs and the others are merely treated as add- ons. We have seen various kinds of chips on cards added to PCs and Macs before, that's true. It's nothing specific to an OS but requires ddrivers and applications. Thanks, Björn