I've just been messing around with CPU VDDA but it did next to nothing for me except that when set 2.6V Prime blend crapped out earlier than normal.

I'm sure i can raise Vcore a tad or two to overcome Vdroop but that's rediculous, i'm sure this cpu could run 3.6GHz stable at 1.4-1.42V but i need to give it at least 1.48-1.5V to get it Prime95 blend stable.

I also played some with ACC but it did absolutely nothing.

I'm holding out for the Crosshair III, hoping it has good voltage regulation and LCC in bios even though it means i have to get a AM3 cpu and DDR3 as well.