mine are actually doing really well as far as heat goes, didn't have to overvolt too much....I do have a 3500 rpm delta fan to help keep them cool but only running at 2100 rpm....the heatsinks slightly warm to the touch all in all working great at 954 (granted I'm just testing...I love overclocking things...I run em normally at 852/876

I have a question about the Frequencies ....right now I'm running at 954 but I'm wondering, can I push further? HW errors are just under 1%  I'm keeping them quite cool and feel I have more headroom at higher frequencies....still have a good amount of voltage etc to play around with...anyone else running higher than 954?