Quote Originally Posted by 4X4N
I recently did my big typhoon. I was a little disappointed with the big typhoon because it only dropped my temps about 1-2 degrees from the xp-90 I was using. I don't think I spent more than a half hour on it. Used a sanding block with 400, then went to 600. Didn't end up with the mirror finish, but it definitely felt and looked smoother, and my temps dropped another 3-4 degrees. In a fully closed case with temp around 25-26, idle is 29-30 and load is 43-44. I didn't think that lapping would make that much difference, but the big typhoon has a pretty poor surface.

What else you expect with air cooling.