HWInfo64 GPU Confusion

clutchc

Distinguished
Apr 22, 2009
418
1
19,215
93
Under the GPU heading, the sensor status for the GPU HWInfo64 presents 2 listings for power: GPU Core Power and GPU Chip Power.

Which one is the total gfx card power usage? Or should they be added together? (which seems unrealistically high)
 

bjornl

Estimable
Mar 16, 2016
399
0
3,060
156
From the author:

GPU Core Power covers only the core rail of the GPU (measured via VRM telemetry). GPU chip power should cover entire GPU chip power (core + aux + additional logic), which is calculated by the GPU and partially measured (core and sometimes aux too) and partially estimated based on activity counters (additional logic) or fixed constants. Note, that the core power might sometimes seem higher, due to instantaneous peaks, which are averaged in the total (chip) power calculation.
 

bjornl

Estimable
Mar 16, 2016
399
0
3,060
156
From the author:

GPU Core Power covers only the core rail of the GPU (measured via VRM telemetry). GPU chip power should cover entire GPU chip power (core + aux + additional logic), which is calculated by the GPU and partially measured (core and sometimes aux too) and partially estimated based on activity counters (additional logic) or fixed constants. Note, that the core power might sometimes seem higher, due to instantaneous peaks, which are averaged in the total (chip) power calculation.
 

clutchc

Distinguished
Apr 22, 2009
418
1
19,215
93


Ah. Thank you. I was going to ask why the core power was always the highest reading. That explains it.
So then... since it measures peak, would the core power be more indicative of what a PSU's +12V rail would have to handle (plus the other +12v loads of course) since that is the peak wattage?
 

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