Above: Jarred explains the basics of overclocking.
Overclocking is not hard. At least it isn’t as hard as it once was or as mysterious as some corners of the internet would have you believe. You probably don’t even need to open your case. There’s a good chance you have everything you need to dabble in the dark arts already and eke out a few more hertz from your gaming rig. If you’re lucky, you may just be able to squeeze enough performance to stave off having to upgrade for another few months.
Having said that, it’s worth stating from the off that the very latest generations of chips from AMD and Intel are shipped so close to their limits that it’s rare you’ll get anything else out of them. You can go through the steps outlined below, but the chances are you’ll see no improvement to your games. Go back a couple of generations though, and things were much easier, with a couple of 100MHz or so on the table waiting to be unlocked.