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You need to change your signature, and you can go higher if you want.
The benefit is a faster CPU.
Why do i need to change my signiture
Forum rules, needs to be 4 lines max.
What CPU cooler are you using and what temps do you get at max load?
Then run something like Prime95 for 15 mins or so to check if the overclock is stable while also letting the temps build up to max: http://www.alcpu.com/CoreTemp/