Originally Posted by Icekilla
With Medium and low, the full load voltage was dropping from the initial value, which was 1.355V.
BTW The Core Voltage is rising again to 1.368V, this is using the "High" setting
This is all very normal. The idle voltage is the result of something called "vDrop". It's a design created by Intel. When the voltage drops under full load, that's "vDroop" and it's another design created by Intel. However, "vRise" is where the voltage goes up under load, and this is just what happens when the Load-Line Calibration is so high that it reverses vDroop.
So apparently, the High setting gives you vRise. You can leave it like this if you want, but I will caution you that this can result in hotter VRM temps and it can result in BSODs or lock-ups while idling because your idle voltage is lower than the full load voltage.
So, I would use Medium or Low. Experiment. There is pretty much no Right or Wrong here.