Quote Originally Posted by SF3D View Post
I had some time today, so I put my cards in to identical situation and tested the max clockspeeds with watercooling (very simple loop and small radiator)
The interesting thing is, that when you push your card to the maximum clock and you do not use fixed voltage, cards start to act more unpredictable. (quite obvious)
Well, that is only partially true. There is thermal shutdown mechanism still active on these cards, even all other protection is shutted off with modifications and software.
The cards which can scale with voltage are in the top of the chart and the cards which have thermal issues are on the bottom. (see reference / lightning)



Now it is easy to pick up 4 cards to my next 4-way SLI overclocking session
My GTX480 doesn't even come close to the voltage you used (P=0 1.063), I'm at 850Mhz, 1700MHz and 4400MHz at 1.138V. When at 880MHz my card starts buzzing and whisling to a point where I don't care to hear that crap, my temps approach 60C at 880MHz!

-Systemlord