re NPUs: they've been a marketing thing for years now, but I really have no idea how many of them are actually used when you run [whatever]. particularly after a year or two of software updates.

anyone have numbers? are they just an added expense that is supported for first party stuff for 6 months before they need a bigger model, or do they have staying power? clearly they are capable of being used to save power, but does anything do that in practice, in consumer hardware?