Temperature (power consumption) CPU Windows vs Android (x64 vs ARM)?

Question

Processors

Let's compare two systems on a 14nm
CPU: 1. Intel Atom Z8350 CPU in a laptop with Win10 OS
2. Any smartphone on ARM with 4 cores of 14nm running Android OS.
Both systems are passively cooled.
Question: why is the first system (from 50 degrees idle) always hot compared to the second system (from ambient temperature: ~30 degrees)? Is it possible to achieve the same energy efficiency in 1 system by replacing the OS with Linux (essentially the same Android?) with subsequent major tuning?

Answer 1

Is it possible to achieve the same energy efficiency in 1 system by replacing the OS with Linux (essentially the same Android?)

no, and comparing Linux with Android is very incorrect, and most importantly, the main difference is in energy efficiency, not because of the software, but because of the hardware.

Answer 2

Dr. Bacon , could you elaborate on the key differences? Why 1 system (let's say experts made the Android OS for this particular computer) will always be hot?

Answer 3

Yes, it is possible to achieve an increase in energy efficiency by switching from windows 10 to linux (and you need to try! The result can be stunning), if the manufacturer does not interfere (problems with switching to standby mode or simply controlling frequencies)
, unfortunately, if the manufacturer did not release for his piece of iron at the same time models with android and windows, it may turn out that it’s impossible to configure linux beautifully (I remember running linux on a similar process, I couldn’t set up sleep mode and something intel hung in the processes blah blah blah, periodically eating a lot of resources, the system xubuntu was clean)
read the problem is no longer in the processor, but in the rest of the hardware.