Why Macbook scaling with a built-in display that is not an integer multiple does not prompt that affects performance
by Poster
Apr 16, 2025
5
The built-in display of mba has a physical resolution of 2560x1600, and the integer multiple scaling is theoretically 1280x800, but the default is 1440x900, which will not affect performance.
However, when connecting an external 4K monitor (3840x2160 physical resolution), if you use 1920x1080 for zooming, it will not prompt that performance will be affected, but if you use other zooming, such as 2560x1440 for zooming, it will prompt that performance will be affected.
Is the built-in display physically optimized?
Replies
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Anonymous372 Apr 16, 2025When outputting 2k, the actual system renders 5120 * 2880
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Anonymous1837 Apr 16, 2025Floor 1 is correct, the actual graphics card will render at twice the scaled resolution When the internal screen is 1440x900, the actual rendering is 2880x1800, which is completely stressless for modern MBA However, the external screen rendering 5120x2880 may still drop frames under certain circumstances.
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Poster Apr 16, 2025@ Anonymous1837 # 2 That's it, I get it, thanks for answering the doubts.
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Anonymous454 Apr 16, 2025It will affect performance, but if you don't play games, the daily use of the GPU is not sensitive to this impact
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Poster Apr 17, 2025@ Anonymous1837 # 2 Something seems wrong: https://i.imgur.com/80rzt9E.png If it looks like in the picture, the actual rendering is twice that of 1280x720: 2560x1440. There should be no pressure. Why does it still prompt "affects performance"?