I really dont think apple will be putting regular p4 chips into the next generation of hi-end macs, they are just too standard. Something tells me that Apple knows that they need to appease all of the hardcore mac professionals with something that will resassure that they have the best computer on the market. With that said, they could go with the xeon chips, but that still is relatively mainstream, I think the chip apple will go with, will be Intels top of the line, itanium 2 chip or a chip derived from it. It is intels highest performing chip, used in servers, they work great in multiprocessor, dual-processor, and low voltage situations and they are 64-bit. In my opinion that would definitly be the best idea to keep the professional market, now to reach the average consumer, i think the p4 or xeons, will be used, they are much cheaper and have higher clockspeeds, which with most consumers is all they look at. What does everyone else think, any ideas of how apple will make this switch truely worth it?