I have a modern AMD system on chip mini desktop that runs Linux (devuan), and have had M1/2/3 laptops. They all seem pretty comparable on power usage, especially at idle. Games and LLM load warm up the desktop and kill the laptop battery. Other than that, power consumption seems fine.

There is one exception: If I run an idle Windows 11 ARM edition VM on the mac, then the fans run pretty much all the time. Idle Linux ARM VMs don’t cause this issue on the mac.

I’ve never used windows 11 for x86. It’s probably also an energy hog.