The VID range is 1.1000 to 1.2500.
The Voltage range is the 1.3625
And the Max intel voltage is 1.45
Though you can safely go over that, I wouldn't go over 1.45 loaded, unless you have great cooling.
Keep her nice and cool, and the voltage will be less important. But you still don't wanna go berserk with the cpu voltage.
Of course, you could ask the next guy, and he would say something differently!