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submitted 1 month ago* (last edited 1 month ago) by theshatterstone54@feddit.uk to c/linux@lemmy.ml

Hello. I know this isn't completely related to Linux, but I was still curious about it.

I've been looking at Linux laptops and one that caught my eye from Tuxedo had 13 hours of battery life on idle, or 9 hours of browsing the web. The thing is, that device had a 3k display.

My question is, as someone used to 1080p and someone that always tries to maximise the battery life out of a laptop, would downscaling the display be helpful? And if so, is it even worth it, or are the benefits too small to notice?

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[-] vole@lemmy.world 9 points 1 month ago

I'd think so. 3k is so many pixels to compute and send 60 times a second.

But this video says the effect on battery life in their test was like 6%, going from 4k to 800x600. I can imagine that some screens are better at saving power when running at lower resolutions... but what screen manufacturer would optimize energy consumption for anything but maximum resolution? 🤔 I guess the computation of the pixels isn't much compared to the expense of having those physical dots. But maybe if your web browser was ray-traced? ... ?!

Also, if you take a 2880x1800 screen and divide by 2 (to avoid fractional scaling), you get 1440x900 (this is not 1440p), which is a little closer to 720p than 1080p.

[-] Strit@lemmy.linuxuserspace.show 8 points 1 month ago

But you don't lower the amount of pixels you use. You just up the amount of pixels used to display a "pixel" when lowering the resolution. So the same amount of power is going to be used to turn those pixels on.

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this post was submitted on 24 Sep 2024
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