^ Do voltages stay at that point for a while. I'd worry if that is sustained voltage though since it's still high. Normally, @ 1.351 V, a good overclocking i7 desktop chip would've hit at least 5 GHz. No reason for a 3.8 - 4 GHz overclock to reach 1.351 volts
Also, if you don't mind, what would be your idea of a proper max voltage?