8w vs 5w power would make your battery time jump from 12h to 19h. When looked at alone 3w difference is not a lot, but in the context of 8w to 3w, 3w is an impr

8w vs 5w power would make your battery time jump from 12h to 19h. When looked at alone 3w difference is not a lot, but in the context of 8w to 3w, 3w is an improvement of around 37% (if I did the math right). If you optimize the software in such a way that the power draw on idle can be very low, all that work will go to waste if the cpu is clocked at 8w minimum. You need a cpu that supports going to that low wattage. Taking this as a reference for an arm cpu on a laptop: https://www.anandtech.com/show/17024/apple-m1-max-performance-review/3 https://www.anandtech.com/show/17024/apple-m1-max-performanc... You can see that even with the laptop on showing a static screen, the power draw is less than 1W. That's crazy and tbh, I'm not sure I believe it myself. In summary, I do agree with you that we need to optimize our OSs so that they become more efficient, but we also need the hardware to improve. 8w minimum is not nearly enough for good battery life.