I have an Asus Vivobook S14 laptop with an Intel Core Ultra 258v processor. In Linux, it gets 12-15 hours of real usage (i.e. not manufacturer "playing videos off local storage with wifi off and the screen all the way down" battery life numbers). If I'm doing something like web browsing or streaming videos, the laptop doesn't get hot and the fan doesn't turn on. I've only had the fan turn on when I'm doing something intensive like compiling GCC or video encoding. It feels just as fast as my ARM Macbook Air.