Pretty significant difference in power readings (Package Power vs VR Power) ?

[MiniSpip]

Hello,

CPU Package Power max is 175W, which is normal since PL1/PL2 are limited to that value in the BIOS. VR VCC Power peaks at 214W and I was wondering whether that 40W difference is something to be worried about, or normal ? Peak VCore is 1.426V.



The CPU is not overclocked it's actually the opposite: It is slightly "underclocked" by tweaking LLC and AC_LL values. Could this be the cause of the difference ? Or is it simply because the VR is also supplying power to other components ?

Thanks in advance.

 

[Martin]

Actually the VR VCC value should be lower than CPU Package Power as it drives the cores rail only, so it should be closer to IA Cores Power.
If the board has dedicated VR sensors you might check those.

 

[MiniSpip]

Thank you for the quick reply.
I activated Asus EC support and some VRM sensors. The "VRM Vcore Power (POUT)" is also higher than the "CPU Package Power" and even a bit higher than the "VR VCC Power (SVID POUT)"...


The fluctuations are a bit weird too, as for current readings: VRM Vcore Power (POUT) can be much lower than CPU Package Power (5W vs 30W) and then peak above it. I checked with a very fast polling period and it's the same.

Is this indicative of a power issue, or something else ?

 

[Martin]

It's hard to compare in scenarios when the power is fluctuating much. Best would be to test at relatively stable load/power.