119W for hx370 looks extremely sus, seems to me more like the system level power consumption and not CPU-only.

According to phoronix [1,2], in their blender CPU test, they measured a peak of 33W.

Here max power numbers from some other tests that I know are multi-threaded:

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Linux 6.8 Compilation: 33.13 W

LLVM Compilation: 33.25 W

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If I plug in 33W into your equation, that would give us score of HX 370: 104 PPA

This supports the HX 370 being pretty power efficient, although still not as power efficient as M3.

[1] https://www.phoronix.com/review/amd-ryzen-ai-9-hx-370/3

[2] https://www.phoronix.com/review/amd-ryzen-ai-9-hx-370/4