One more thing about the memory as well. This board has 4 ddr slots, but if you want to use all 4 at once you need to use registered memory. I think its worth it to pay a little more and get crucial or some other top brand. I overclocked a bit too high and blew 2 sticks of memory. Lifetime warrenty and I just paid for the $5 shipping back and I saved myself almost $200. As far as OC'in a XP I have no experience with that, but you can jack up the FSB to OC it since the multiplier is locked from the start..... just beware as a high OC screws up your pci cards and agp b/c they run off a ratio based on your fsb. I/E 100mhz fsb comps have a 3 times divider so they pci can run at 33mhz. 133fsb have a 4times divider. I have also heard that OCin your fsb real high shortens the life of your harddrives but I don't know why.