I wonder why the original pentium works wonders with XP, but my celeron has some trouble... I don't like celeron, but its the only one that would fit my socket that I had on hand. My Pentium is up for grabs though, if anyone wants it... Its a socket 7, so... yeah. But anyways, AMD is waaay better, but my AMD has a wierd socket. Its an AMD 2000+, and it ran like a champ in my other PC. But because of lightning, the original mobo burnt out (literally fried, it had smoke), but the processor and RAM were ok .