Originally Posted by bgineng
These chips have a voltage called VID (each chip is different). VID increases as clock speed increases. Basically, VID + offset voltage = voltage the chip will run at.
You can find your chip's VID at different clock speeds using coretemp if you want.
Is VID supposed to only depend on multiplier and nothing else? Because it doesn't for me. Using offset mode...
multiplier 46, coretemp VID = 1.256 idle, 1.246 under load
multiplier 47, coretemp VID = 1.256 idle, 1.246 under load <-- same as 46 multipler
Not only that, but VID changes if I change the turbo voltage (both of these are at multiplier 48):
turbo volt: 0.125, VID = 1.326 idle, 1.3210 under load
turbo volt: 0.160, VID = 1.3561 idle, 1.3561 under load <-- it's different even though same multiplier
And the voltages aren't exact since they generally alternate between two or three numbers.
Is something wrong with my system, or can someone explain exactly where the CoreTemp VID comes from?
And... as far as real voltage going to the chip... is that what CPU-Z reports as core voltage, or? When people talk about max voltage going into the chip, are they talking about as reported by CPU-Z?