This is why i sent you the like to the aero 4, not the aero 4 lite, the true aero 4 has a pure copper heatsink and that makes all the difference. i run a 3.0 p4, and my aero 4 works like a dream, right now my cpu is at 33c/91f thats about 10 degrees F higher then room temp. also in a previous post you said you found a cool LIKE the aero 4. if this is the case you should have gotten the real thing