Ive been playing around with this for about half an hour now. It seams this feat of technology drops my cpu (3500+ 939 newcastle) down from 1.5v to 1.3 when not in use. fair enough, save a few watts. My cpu is now running at 25degC as opposed to 28. But is it really worth it? As soon as the cpu works it just jacks it back up again.