ThinkPad T490s

This unfortunately is normal for these. T490s was not a good design. Lenovo thinned the chassis and choose a smaller cooling system compared with the predecessor T480s that's not up to the task of adequately cooling the 25W sustained thermal power your CPU is allowed to produce under load. T490s sto

In the hope they're 16GB or 32GB RAM (T490s), I'd favor the X13 Yoga G1. Linux more forgiving of 8GB RAM than Windows 11, but as RAM is fixed 16GB should be your minimum. X13, slightly faster RAM, Intel 10th Gen isn't a vast upgrade over 8th, Gen but a minor improvement, none the less. X13 is also a

https://www.notebookcheck.net/Intel-empire-strikes-back-with-21-hrs-of-battery-life-Lenovo-ThinkPad-T14s-Gen-6-laptop-review.1008078.0.html This is the device you should buy. Very efficient, much more powerful than the T490s and with Lunar Lake, even some light gaming is possible.