I have a XFX 6950 in my system and its got an unlocked shaders but clock speeds left and over clocked myself so I don't disturb the memory timing. The problem I have is that when running OCCT it hits stupidly high temps of 95-105c !! is this normal as OCCT does put the GPU under unreal stress. During games I think its around the area of 75-80C but that's just in Battlefield BC2. Its in a SilverStone FT02B case with CPU running at 30c idol
I have an unlocked 6950, overclocked to 900/1408mhz. When i play Crysis 2 I never go above 60C.
I'm using a Coolermaster HAF-22. 2 120mm fans and 1 200mm fan. I also run the gpu fan at 100%.