Finally, while it is beyond the scope of this article
, the practice of "undervolting" can also yield significant increases in battery times. Undervolting is the technique of lowering the CPU operating voltage at a given clock multiplier in order to consume less power. Results have shown that undervolting offers up to 25% longer performance, which translates into a full hour or more of batter life in some cases. And unlike overclocking, undervolting is nearly foolproof as the worst thing that will happen is that you get the infamous Blue Screen of Death (BSOD). Two great side benefits to this trick are that you will also get an incredibly quieter and cooler running notebook. If you're interested in undervolting techniques, let us know in the comments section of this article.