Quote Originally Posted by karbonkid View Post
note. these calculations are by no means accurate. i have assumed the current a CPU draws is constant, etc. But at least it provides an indication
At stock, the procecessor's TDP is 68W. Stock is 1.1V, so 68/1.1=6.18A. Now if you feed it and extra 0.15V, that mean 6.18*0.15=0.93 extra watts, a lot of which isnt actually being used (TDP is a theoretical maximum), and therefore the difference is not large enough to show up when measuring power, especially not of the whole system.
Current draw is not constant, it depends linearly on voltage.
Power draw scales as Clock* Voltage*Voltage.
In this case, increasing voltage from 1.1v to 1.25v gives (1.25/1.1)^2 = 29% increase in power draw. So, CPU with 68W TDP becomes 89W.