What is a good range for the 2500+? I used the retail heatsink and fan, as well as the thermal pad that came with it, and I get from 37-43 or so degrees celcius, is this bad? What should it be, and what can I do to lower the temps short of taking the heatsink off and applying AS5, because it took me like 2 hrs to get the heatsink on, and now I don't think it'll come off again.