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I haven't overclocked one myself, but the one thing that I would keep an eye on is heat. From the factory, Ivy Bridge processors seem to run pretty warm, and from what others have said, once you start OCing them they get hot. If you are aware of this when you are building your gaming machine, you can take steps to mitigate it in advance (liquid cooling anyone?). I get the impression that IB will be fine for mild to moderate OCing, but getting radical would make me worry about heat issues.