... i know my computer can be over clocked ...
Broadly generalizing, there are two different ways to overclock. One is to start out purchasing components that are known to be generally good for overclocking, and then overclocking them.
The other is to take a generally purchased system, and overclock it to whatever extent is possible.
If you purchase all components with the intent to overclock, by carefully choosing only the best you can in some instances overclock by as much as 25 percent or so on air or room temperature cooling. (In other words, without going to extremes, such as subzero cooling, etc.)
But (AGAIN, applying a broad generalization) when overclocking a system that was never intended for it in the first place you are usually very very lucky if you manage to increase performance by much over about 10%. Unless you are extremely lucky and just happened to luck into all the right components, some component always limits you before you get too far.
In your first post, you indicated that you wanted to oc your (existing) computer. If so, then determine exactly what motherboard and what chipset you have, and then search and read until you understand exactly how that particular chipset/board can be overclocked, and then begin doing so. But before you even begin, understand that you are risking what you have for what is probably going to be at most around a 10 % overall increase in performance. Think about what that means in terms of your usage - for example, if you are getting 30 FPS in AH, how much do you want to risk to go to around 35 or so?
If you are looking to build out a new system that has great overclocking potential, it's a completely different ball game. But I didn't think from the original post that that's what you meant.
All just my humble opinion based upon 30 years in the industry, of course. YMMV, TANSTAAFL, etc.
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