well mine doesnt work on my 8800gtx. as its such a knew product, theres not many reviews around. a couple said it works really well, and ive seen people say its good on your card. but then theres 1 review which tests it on a gtx and it got over 100c load temps- which is basicly what im experiancing... so really i dont know if it will work fine on the GT, but just beware... look into it more, or just dont take the risk and get that thermalright one instead possibly- thats what i wish id done. However it may just be the gtx which doesnt like Duorb?