*** NVIDIA 470/480 Series Thread ***

[Systemlord]

Anyone have any opinions regarding OCCT as stability benching?

I recently got my GTX480 under water, and done some benches using Kombustor, Furmark, Vantage, Dirt2, Unigine and OCCT.
Seems like whenever I go above 875 / 2001 on either core/mem - every test except OCCT kinda gives a "true-false" result. Especially Kombustor and Furmark doesn't show any artifacts or instability above like 900/2200, although both Vantage and Unigine show instability and OCCT gives loads of errors

Anything above 850/2001, I've set voltage to 1.2 in AB.

Looks like you just found three programs that are reliable for showing instability, but Helloworld is correct. Return memory to stock clocks and find your maximum overclock for your GPU and Shaders, memory clock speeds are less important then the GPU and Shaders unless this new GPU is different than the previous. ATI cards though respond well to fast memory which is why they started using GDDR5 in the first place.