And here you thought that all that those crazy overclockers did was pump juice into their chips to make 'em go faster. LegitReviews takes it in the other direction, & under-volts their AM2 4200+ to see how much cooler it will run, & how much less power it will draw.

"Our testing showed that we were able to shave off 28W at full load, so by undervolting we can expect to save up to $34 a year by reducing the utility bill. It almost makes you wonder why more people aren't doing this!"