mrdbristol is correct. The monitoring chip on the P5N-E is an ITE IT8718F-S and frankly, it's not very good. To get proper voltages you need to use a voltmeter. The readings are pretty linear though - so if you start off with a setting of 1.0V in the BIOS and it reads 1.1V in CPUz, then usually if you set the BIOS to read 1.1V, CPUz will read the extra 0.1V and show 1.2V and so on. You also have to compare apples with apples on the loading - you can't compare the voltage at idle with the voltage under 100% load for example. Voltages aren't usually a problem anyway as the processor will just overheat and shut itself down. It's quite a leap of faith, I know, but usually, if you can cool it, it will usually run quite happily without reducing the lifetime of the CPU. RAM is different in my experience. I've killed RAM with over-volting and extreme temperatures.
