Quote Originally Posted by alexio View Post
Yeah, you only need to change the "Extra" option to 1.1v. Your card may already have 1.1v, so maybe you won't see any improvements. There's no way to tell from these two screen if the card is running 1.1v already I think.
IIRC, some users with the blank field in the original BIOS reported improvement after selecting 1.1V. Thus it seems a blank field would mean the Vcore is only 1.05V only. I cannot confirm this with my GT, the filed was set to 1.05V.

Anyway as Alexio said, the best way is to try and see if you get any improvements