VID and power consumption

[WhiteFireDragon]

since amps x volts = watts, does a lower VID mean that the chip consumes less power?

according to some PSU calculator, all 45nm core2 duo uses 65 watts no matter what the initial VID is. then when you OC and increase voltage, power consumption goes up. i was playing around with it, and a chip with VID 1.25v overvolted to 1.30v will consume less power than a chip with VID 1.20v overvolted to the same 1.30v. this makes sense because the delta from 1.25v to 1.30v is smaller than 1.20v to 1.30v. smaller delta when OC'ing = lower power consumption regardless of VID. is this correct or am i missing something?

[WhiteFireDragon]

can anyone shed some light on this?

[Aerou]

Basically, since it directly affects amps * volts relation, lower VID = lower consuption, because at stock, BIOS of the mobo reads the VID of the particular cpu and sets it.
Better said, lower VID = lower Vcpu is set (which results in lower consuption), but that changes when you adjust it manually or some BIOSes auto-raise votlage when OCing. But beware, low VID cpu overclock better, but are hotter and consume more power, since at the same voltage, they allow more current to pass than the high VID cpus.

In the end, you still need a watt-meter to know

[WhiteFireDragon]

hmm that seems rather contradictory. you said lower VID means less power consumption, but at the same voltage, they actually consume more power?

[Aerou]

Sorry, I meant at stock, lower VID should provide lower consumption, but when your overclock, the low VID cpus start to draw serious amps