Thanks a lot for posting this information, I think it makes a lot more sense to undervolt than it does to overvolt in my mind. Most of us with good sense buy above what we actually need anyway so we've got plenty excess speed if we don't really have to use it. In those cases we can get double benefits of having plenty of speed, and then save plenty of money on cooling because we're using very low voltage which produces FAR less heat!
If you enjoy overclocking as well you can still do that while using less voltage so you get the best of both worlds. I LOVE the fact that I can run my Phenom II X4 955 at it's stock 3.2Ghz @ 1.168v rock stable through any stress test when the voltage comes stock at 1.350v. It saves lots of heat (already not an AMD PII problem), lots of power at load, and it makes the system much quieter because of very low heat. On the stock voltage 3.7Ghz is no problem and with a very small bump 3.8Ghz is no problem all still on silent air cooler.
I've been going through these past few days and finding exactly how much cpu speed I need in order to get everything in my system that's stressful to run at optimal speed. For games of course I'm focusing on making sure I can get 60fps (1360*768 32" LCD) with all options enabled, which is easy to do for everything except Crysis of course. The other programs I'm just looking to make sure there is no percieveable slowdown when using them. That's easy to do for any programs since I'm not doing heavy encoding/converting video and stuff like that anymore. If I need to I can always bump the speed up to uber levels and finish that stuff quick then go back to normal.
Not many people seem to do that, lots just bump it to whatever the max speed they can get is even though they don't use even the stock speed as a requirement lol. To each his own, sometimes it does bring a smile to your face just to see a huge number.
Kei