MSI Afterburner and GPU-Z show differing power consumption levels - which is correct?

hsjj3

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May 22, 2016
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It appears that there are two sets of power sensors on the GPU.

MSI Afterburner and Nvidia Inspector's "Total Power Usage" are both identical values.

Meanwhile, HW Monitor, GPU-Z and Nvidia Inspector's "GPU Power Usage" are identical values.

At idle for example, the MSI AB reading is ~12%, while the GPU-Z reading is ~8%.

I would like to know, why is there a discrepancy here? Why are there seemingly two different power sensors on the GPU? Which is the more accurate reflection of the entire GPU's power consumption?