Billy,
1) Ever since I put ont this big-ass copper cold plate, my temps are ALWAYS between 75 and 84 deg F, whether I run at 700 or 1029 MHz, at idle or at 100% stress.
2) I bought a 400W athlon-approved PS to handle my 'bidness' , but a 300W athlon-approved PS will be adequate for a 55W...