This is a cool device. I just ran my Gaming box (X2 4200 (65w)) on it for a while. It has a 550 watt ps, 2 x 7600 GT video, 2 x dvd, 80mm aftermarket cpu cooler, 1 x sata HD, 2 x 120mm fans and NO OC. Added results.
Zero load (idle):
AMD 2600 - 130 watts - 1.57 amps
X2 5200 - 59 watts - .78 amps
X2 4200 - 120 watts - 1.49 amps
100% load
AMD 2600 - 150 watts - 1.81 amps
X2 5200 - 110 watts - 1.36 amps (cpu temp = 36 C)
X2 4200 - 170 watts - 2.05 amps
Both of the X2's are 65 watt. The Gamer uses more power at "idle" than the stripped down, oc'ed 5200 "cruncher" uses at 100% !!!
That's a good argument for using only the minimum of "extra's" on a "cruncher" build ......