I am not sure I understand it myself, simple electrical theory is easy to understand, wattage is the product of current and voltage. But CPUs work on a different formula because it functions like a variable resistor.
From what I could figure out when it was explained that I was wrong that undervolting does not damage a processor because the current is limited. Otherwise undervolting would require an increase in Amperage to meet the wattage requirement to handle the work required.
Last time I looked there was no amperage setting in DrMOS chips, only voltage adjustments, so I do believe that I was informed correctly. I am no CE/EE though but I tried perusing the documents linked to teach me about the current limitations. I have also read up some techdocs on DrMOS chips, but it is quite possible that my ignorance is not helping the situation despite my attempts to learn otherwise.
But back to your question, and I think I understand this enough although it really is guesswork for me.
Extra AMPs ARE drawn and that is why most VRM's will have some type of OCP installed on motherboards and video cards, however this refers to current supplied to the power conditioning system not hte CPU itself.
DrMOS (driver controlled MOS) allows us to change the voltage that outputs from the FETs to the CPU/GPU, northbridge or whatever. They are designed to release voltage at a specific current level. Good thing we cant control current actually I would have torched up a lot more chips with that option
