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Thread Starter 
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 at a given point in time?