To be fair to Apple, their best selling laptop runs on the same chip as their best selling phone, so they are rather surprisingly on the forefront of this efficiency in consumer-facing devices.

Not looked at Slint, thanks for the tip. Qt is OK-ish; things seem to improve on the Mac a lot beyond 6.8.

> To be fair to Apple, their best selling laptop runs on the same chip as their best selling phone

Technically, their best selling laptop has been the MacBook Air for some number of years. Maybe that changes with the Neo, which genuinely runs on a former phone chip, but a slightly older version than what's in their newest phones. Macs are running on silicon that builds on the phone architecture specifically intended to run in larger devices with larger batteries and (in most models, though not the Air) active cooling.

But they do all share a lot of design philosophy around performance per watt, and they're quite good at the moment.