The 10W (MacBook Air) variant of the M1 achieves a median CPUMark score of ~14500. That's a lot better than the Intel CPU's 13453 at 29W. Now, if you limit the Intel CPU to a lower TDP by underclocking, the performance per watt can improve substantially (since the efficiency plummets when going for peak clock speeds), but it's still considerably behind the M1.
https://www.anandtech.com/show/17024/apple-m1-max-performanc...
The best think I have found that runs Linux reasonably well (still with lots of caveats) is the X13s. And I cannot get a decent price.
With equally performing software, the one with the best performance per watt will be run cooler and longer.
The graph I sent is not raw performance, but performance per watt.
Because, as I said in the original post, even when Apple was selling Core 2 Duos, their cooling was better than most other manufacturers. I was often buying Macs to run Linux because of this.
Also see what the parent post says about performance per Watt, which mirrors my experience as a user. No current x86_64 machine is close to ARM if you want low heat.
People didn't liked ARM windows laptop, first because the performance was crap, then because the poor compatibility.
