Questions about battery life on 2.8K 120 Hz screen + AMD cpu

Hi everyone,
I’m considering buying a second-hand FW13 laptop with the newer AMD CPU, and I’ll be running Ubuntu. Most of the listings I’ve seen have the 60 Hz screen, but I much prefer a higher refresh rate.

That said, I’ve also seen that the typical battery life for an FW13 is around 5-6 hours, even under Linux, which has me a bit concerned.

So I’m wondering: does anyone have experience with the 120 Hz / 2.8K screen + AMD CPU setup? How long does your battery last in real-use? Is the shorter battery life what I should really expect, or are there tweaks to improve it? And more importantly, would going with the 60 Hz screen make a noticeable difference in battery life?

Thanks in advance!

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