Gee, that w1retap just never stops talking, eh? Seriously, you can forget about using Coretemp because it doesn't have a signed 64-bit driver. You can use Speedfan, though you might have to go into Configure>Advanced, then select the Intel chip and change the offset value to 15 (from the default of 0). That way you'll keep a truer eye on your temps. Oh, and get the new 64-bit Prime95, it automatically associates an instance with each processor core... sweet! Overall , I like OC'ing in Vista64 because it's just more stable to begin with. Have fun, don't kill silicon.