Well the way I see it if you're gonna overclock why not push it to the max. Run regedit and go to the folder called local user i think. Then go to software then nvidia corparation. In there is a folder called global and in that is a folder called nvtweak. If nvtweak isnt there go up to the menu and hit make a new key called nvtweak. Then all you have to do is make a dword called coolbits and set the value to 3. Then your set go to the display options and the sliders will be there. Take it as far as you can go.