I got my 6770 about a year ago, it's an XFX 1GB 6770, with stock speeds of 850/1200MHz. I recently got into overclocking to try and get the most FPS out of this card as I could. Without increasing the voltages I'm stable at 950/1300MHz, but I want to get my core clock to 1GHz. How much do you think I would have to increase the voltage to get there? Also, what programs could I use to increase the voltage? MSI Afterburner doesn't seem to want to let me increase the voltage, and I can't seem to find it in the bios (the bios on an ASRock 970 Extreme3). Any help would be greatly appreciated.
If you can't increase the voltage in MSI Afterburner it's because the card's bios won't allow you to. You'll have install a modified bios for your card, which can be a little tricky.