I had my kuhler H2O 620 keeping my CPU at 35*C - 40*C idle and 70*C - 75*C under full load right from the start, but in more recent months it started to make really awful noises so i RMA'd it.
Got the new one in the rig today and the idle temperatures are 26*C - 33*C idle and 55*C - 60*C under load! Wow... i guess the first cooler was faulty right from the start!
Running at 4.2GHz in push pull. Got a generic lian li fan pushing air into the rad, and the antec fan pulling it out (on speed 6 out of 9 because it is a noisy bugger)
Also, brake cleaner proved to be good for getting the thermal paste off. (couldent find anything else)
Got the new one in the rig today and the idle temperatures are 26*C - 33*C idle and 55*C - 60*C under load! Wow... i guess the first cooler was faulty right from the start!

Running at 4.2GHz in push pull. Got a generic lian li fan pushing air into the rad, and the antec fan pulling it out (on speed 6 out of 9 because it is a noisy bugger)
Also, brake cleaner proved to be good for getting the thermal paste off. (couldent find anything else)