When I upgraded to an athlon 2800xp barton I noticed a big change in the heat the prosessor produced (41c as apposed to the 55-61c of my old 2000xp). I was wandering if it would be safe to disconnect my noisy system fan. I've already tried it for a short while and it does jump up a little but not much. It only goes up to 43c. That's not under stress though.