Overclocking consists of running components at faster internal speeds than they
are rated for. If you are serious about overclocking your computer, you need
to do extensive research into the components you select, as some parts respond
to overclocking better than others. Processors that respond well to heavy overclocking
are generally not very expensive (though overclockable memory is), but
the price of a component is by no means a guarantee of its overclocking potential.
Overclocking usually voids your warranty and is risky (you can destroy
your entire computer), so be warned! You need to think hard about cooling the
computer as overclocking generates heat. Anything from a few extra fans to a
liquid-cooled system may be necessary depending on the nature of your system.