Comment by toast0
For a long time, x86 chips are happy to give you a little more performance for a lot more watts at the top end of the performance chart.
Watts/fps @ max fps makes for an interesting graph, but not a very clear comparison. It would be better to compare watts used when locked at a given fps, or fps available when locked at a given wattage. Or watthours to do a video encode (with max wattage, and at various watt limits).