My old amd k6's fan isn't running at full rpm anymore so when it gets hot I just put the 15in fan on it, cools it down nicely. Before that when I ran anything cpu intensive it would blue screen. No good cooling air in the world can beat a 15in fan blowing on everything. Might even put a small freezer behind it to blow cool air too. When I buy my new mobo/cpu I want to be my tbird running at 150mhz fsb, the fan should help that don't yah think?