[KerrAvon]

You seem to be arguing with a strawman here -- who said you need an M3 Ultra for energy efficient Face ID?

[cubefox]

"stouset" implied that those are merely possible but not energy efficient on the older mobile hardware.

[badc0ffee]

The original question was asking what features have taken advantage of a NPU. Face ID was introduced with Apple's first "Neural Engine" CPU, the A11 Bionic.

You're confusing this with what features/enhancements new generations of NPUs bring, which nobody else was talking about. Everyone else in the conversation is comparing pre- and post-NPU.

[cubefox]

The original question was clearly about the NPU of the currently discussed M3 Ultra, which is twice as large as the previous one. The question is what this one is good for, not what much, much smaller NPUs are good for which have nothing to do with the M3 Ultra topic.