[dougall]

Correct, yep. These are theoretical numbers, measured in cycles from a P-core (with no loads/stores), real-world performance tends to be a little less (~93%): https://twitter.com/stephentyrone/status/1455665595677085697

FP16 only doubles throughput rather than quadrupling.

I haven't looked at power/thermals, so I can't really comment. (Though it's possible it's always running a bit under 3.2GHz, since I was measuring in clock cycles - that might be part of the 7% difference.)