Yeh; but the AMD64 runs cooler than it’s similar clock-speed 32-bit brethren and provides a good deal of future-proofing. FedCore 2 is fab (that’s what I’m running right now) – sorry to hear about your boot problems. You can download the beta of WinXP-64, if you really want to try out all the extra new bits of your processor, but I wouldn’t bother.

Just sit back and relax, safe in the knowledge that you’re ready for next year’s OSes.