About 3 years ago I bought a new pc and did some OverClocking.First, your hardware needs to be able to do OC (Motherboard, Processor, RAM and Graphics Card). If it isn't designed to OC, don't do it, as your computer will become unstable.Especially important is clock frequence on RAM, as it has to very high (and expensive too).I got most of my information from Overclock.net - An Overclocking Community and XtremeSystems Forums (best). Last after 6 month of "testing", I got my electric bill