That board only has 3+1 power phases with no heatsink, so yes I agree with the above poster certainly don't touch the voltage. Even at stock im sure they are going to get hot, I would try to position a fan to blow air down onto the VRMs. Turn off turbo boost and you might be able to get 4.3 or 4.4ghz out of it before it starts crashing. Run some stress tests after the overclock and keep an eye on temps.