One other thing I can say...I used to work for HP back in the day (a couple of years ago). I'd run a battery of tests on RISC processors going into duallies and quads designed for massive enterprise servers. Let's just say that there wasn't a whole helluva lot to those tests. Personally, I would have no problems running dual XP's instead of paying the premium for MP's, which is what I plan to do. That is, if by the time I upgrade again, the Clawhammers are not as kickass as we all expect them to be.