Originally Posted by roleki
I have a related question - is there a rule of thumb on how tightly an aftermarket cooler, such as the Hyper 212+, should be attached? I.E. finger tight + 1/2 turn, or anything like that? I'm always worried that I'm going to over-tighten and damage something, but obviously, leaving it overly-loose isn't good either.
The maximum design spec on the OPs i5-2500k is 65 lb. (lbs force)
I'm not sure about your i7-950
Converting linear force into torque on that screw on an aftermarket cooler would be one way to do it. The other is to read the literature carefully.
The final way to do it would be with minimum tightening, monitor temperatures in an IBT run, then do a 1/8 or 1/4 turn on the screw and see if your temperatures go down on the same test. If the temperatures drop, then you can continue tightening until you see no thermal change.
If the temperatures remain constant, there's not much need to tighten anymore, so long as it's tight enough that it won't damage the CPU from wiggling around if you move your case.