Hello .

I have done the pencil with my HD4850 and have now 1.37 volt for the GPU under water ( swiftech waterblock ) .

I flashed the card at 850 Mhz for the GPU but when i use 3dmark2006 , i have got some artefact on the last scene with snow but no freeze .

At 820 mhz GPU , no more artefact .

So , do you think the card need more voltage or is it normal to have some artefact at 850 mhz GPU ?

Did someone notice the same thing ?