I have recently switched cpu's from an unlocked amd quad to a 955 BE and did'nt change HSF which is a Sunbeam core contact freezer 120. So I am right at 50 degrees overclocked and under load. It seems as though I am not pushing it hard since I am at 4.1 G on 1.375 V. The question is ..... is it woth changing HSF to go farther if so to what? I do have a Thermaltake Bigwater system at my disposal or is there an air solution that is with a doubt better and somewhat affordable?