Bios Voltage and CPU-Z Voltage Readings

[Mud]

iam running my LGA775 550 @ 4GHz 100% stable @ default voltage on bios.. (bios reads it 1.385 iam not sure cba to reboot now lol) anyways the readings are different.. since CPU-Z posts 1.44v as a final reading for voltage..

ive seen similar cases with some other ppl.. what do u think of this and which is right cpu-z or bios

[batboy]

Well, Prescotts use a dynamic vcore which means it changes depending on load.

[Know Nuttin]

I've got the same issue too. 1.3875 in bios, CPU-Z reads it at 1.525-1.544 roughly. This is at idle or load. Very strange

[fAlCoNNiAn]

Well, Prescotts use a dynamic vcore which means it changes depending on load.

is this for only 775? or do 478 pressies do the same?

[crotale]

Both the BIOS and CPUz, or any other software, will read the "voltages" from the same monitoring chip.
I say "voltages" because these are very often not trustworthy at all. In my experience they fluctuate more according the software than they do when measured with a multimeter, and the multimeter shows the actual/correct value (as long as the mm isn't faulty)

There is also a drop in voltages on most motherboards during load, simply because Intel has guidelines for that in their motherboard design specifications.