Notes on the paper Khan et al (2018) RAPL in Action: Experiences in Using RAPL for Power Measurements. Advantages and limitations of the Running Average Power Limit (RAPL) interface.
I now have to make a decision between having the best, cutting-edge hardware vs the freedom and control to do what I want with the device I spend most of my time on.
Apple produces the most environmentally friendly laptops from both a carbon footprint and energy efficiency perspective, but it depends on which model you compare. The best thing you can do for the environment is to not buy a new laptop.