I had some time to check the voltage at the point that you specified. The vdroop is indeed massive. With a requested 1.60v I get 1.58v at idle dropping to 1.54v at the lowest in linpak. I see 1.64v in Everest at idle, and 1.60v under load, so it appears as though a correction factor of .06v can be used to determine the actual core voltage from Windows.
--Matt





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