Back in the early pages of this thread are pics that show where on the MB the points to measure vcore vmch and vdimm are.
Also, what's commonly reported as V1.5 in sensor reading programs is the vmch.
And just to make sure... You can't programmatically measure the NB temp. There's no sensor on or near the chip. You have to stick a thermometer on it. The "Motherboard" sensor is actually in the upper left of the processor area.
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