Well, I wish I could be that lucky
My diff is about 35-40 degrees C
Right now, it's running full load with CPU at 70 C and case temp is 28. And that's a Duron...
Geez -- there's gotta' be something wrong there! What is the HS, and the fan? Is there a flaw/grooves/no thermal grease on the bottom of the HS? At the very least, the life of the poor thing will get shortened...
If I knew what's wrong it would not be wrong for long, you know
Anyway, I always have exactly the same problem. I installed and reinstalled the CPU HSF so many times I can do it with my eyes closed. And I have exactly the same problem always - it just keeps running hot.
Ok, I used Arctic Super Silent or whatever it is called HSF which is aluminium with 8 cm fan. The Arctic Silver is applied, tried thicker or thinner layers - no noticeable difference. On another machine, running Athlon XP 1500+ - the same problem, using GlobalWin full copper HSF with Arctic Silver etc etc - no luck, running hot.
I do not know, maybe I just screw it up somehow although I cannot imagine where. Or, maybe I should use a Volcano