Originally Posted by Tennobanzai
I'm just wondering if the stock VID has anything more then just the cooling.
It is interesting. I had a GTX 470 with a stock VID of 1.075V. Let me be the first one to tell you that it overclocked like crap. Could not even get to 800 stable (IIRC, the highest it could go was 750). I returned it and re-purchased two more GTX 470s.
One was .925V and the other was .962V I believe. The prior could clock to 870 on the core and the latter could do 830.
I then sold my 470's purchased two GTX 480's. They both had below average stock of 1.063, but could clock relatively high. 850 core on 1.075V was pretty damn good.
After I got my GTX 570, its stock VID was 1.038V, which I heard is decent. Again, this card clocks at 900 at 1.088, which is nothing spectacular.
My conclusion is that VID can affect overclocking ability, but is no way shape or form the final, end all be all determinate.
I just purchased a GTX 580, and I will tell you how that goes.