i think no one uses it because it sounds good on paper but looses its appeal during the implimentation.

DFI started it and keeps using it, maybe beause they have a contract with the mfg of the pieces?

frankly with the massive heat from digital pwm i wouldnt use it either.

droop is something that can be controlled with some fo the cheapest parts on a motherboard but mobo makers just continue, after years of doing it, to keep right on doing it.

and asus is king of vdroop. i dont think there is another company out there who is more well known for their horrible vdroop than asus.

and the fix is just as cheap as the cause. 1 single resistor placed in the right spot is all thats needed, but they just dont do it.