Overclocking is free for one reason. For another reason with the proper knowledge it is very safe and very stable. Why not maximize your CPU's full potential since most of them are tested to run at higher speeds, and sold at a lower speed for purposes of being safe. The difference between a system running at 155 FSB like mine compared to 133FSB is a big difference. Everything runs faster, games, windows, you name it. Also with the current cooling products on the matket you can crank up your system speed and voltage and still run cool enough to perform very well. One last thing about overclocking, its fun to do, i love seeing what guys were able to get with there systems.