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by zaphoyd 2290 days ago
Macs have the option to run a 4K screen at different "effective dpis" via scaling. The default ~200% scaling factor gives you a 1920x1080 work area that is twice as sharp. A lot of folks (myself included) choose to draw larger work surfaces (I use a 5120x2880 canvas with 2560x1440 work area on my 24 inch 4Ks). A 4K screen is high enough DPI that when scaled text still looks very nice (nicer than a native res 1440p display). Doing this (especially on multiple displays) requires a lot of GPU power.