Let’s talk some more geek about a concept that has been around for quite some time. I don’t know if it is still as popular as it used to be, specially with the current CPU specs but I’ll run through it anyway.
The concept of overclocking is to make a piece of hardware, most of the time a processor, run faster than the manufacturer specified. You make it run at a higher clock rate, thus overclocking. This may sounds like a great plan, because now you can buy a crappy CPU and crack up the speed, but it’s a double edged sword.
If you overclock a component, the electricity consumption will increase and because of this it will generate more heat. This heat has to be removed as soon as possible or your overclocked component may start acting very weird or may even get damaged. The trick is to keep it running stable even at a higher clock rate.
In most cases a specialized cooling system is used to get the heat out as soon as possible. The most known form of this special cooling is a water cooled system. Seems like a great combo, no? More electricity and we are going to combine it with water. What could possible go wrong?
How much faster your CPU will run depends a bit on what you will be using it for. If we take gaming for an example, the “extra speed” will be around 20%. Which is kinda nice. But again, keyword here: COOLING!
The complete opposite also exists, which is logically called, under clocking. Why would you do that? Simple… Agreed, your computer will run slower, but it will be a lot more silent since less heat is generated and if you are using it only for some internet surfing or movie watching you should be just fine. And very comfy as well with a lot less noise.
Do keep in mind that this sort of trickery is often not recommended my the hardware manufacturer and therefor the chances of you getting your money back if it fails it very small.