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First, what are you currently running at, with what kind of cooling? Also, what are your load temps? I'd say if you're at least posting, that is a good sign, try adding some more voltage to the CPU if you have good cooling. Generally you don't have to increase VIO (voltage to the AGP, RAM, various other components) unless they are holding you back and I don't think that would be the case. Again, could you provide us with some more information?