The VRMs are obviously getting hot - don't worry, but you need to do a stability check.
Use Prime95 or SP2004 and leave it running for about three hours, with something like SpeedFan to check the temperatures. Not only will this check if your overclock is stable, it will also give you a high temperature.
Over 55 or so is not good for VRMs, so think about putting a fan over them.
Over 65 or so is not good for the CPU - are you on stock cooling?
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