Originally Posted by Johnny_Utah
I respectfully disagree. The Kingpin findings have already been brought to light. He comes right out and says "most kepler chips are capable of 1400MHz on air."
Now, you are telling me there is no headroom with some voltage? Honestly I don't know why they were locked down. It could be we have seen the end of the days where you can purchase a card for 400 bucks and OC the heck out of it with unlocked voltage. It may be they are taking a page from Intel.
There does have to be some headroom for more voltage, if the stock max 1.175V was that hard on the PWM people would be close to being able to kill them with a high overclock. There just isn't a lot of headroom or they would have the voltage unlocked on the reference.
Unlocked voltage is still pretty new, weren't many cards before the 400 series where there was any software voltage control (for nvidia, I'm pretty new to ATI/AMD so dunno much about older ones).
I'm waiting impatiently for the 680 Lightning...