When limited to 5 watts, the Ryzen HX 370 works pretty darn well. In some low-power user cases, my GPD Pocket 4 is more power efficient than my M3 MBA.
For my use case, I plug in a external SSD drive, setup an MP3 playlist, close the lid then put the computer into my backpack for low wattage listening. The M3 MBA uses about 50% more power than the P4 under this use case (usbc watt meter shows this).
