GeeCoolGuest
GeeCoolClose to the truth. The chassis owns the sustained power budget on HX laptops, so plugged in the 20 cores can stretch toward 5.3GHz, while unplugged long jobs get clipped first and VNNI is only good for short quantized runs. The NPU, quoted near 33 TOPS, is the steadiest part on battery because it sips power and never fights the cooling system for headroom.
It pays off for travellers who want occasional 20-thread bursts and sit near an outlet most of the day. Paying HX money purely for light mobile AI is wasted. Two laptops with the same chip can differ widely in sustained performance, so read the specific machine's power reviews before you commit.