2304x1296 scaled resolution works even greater, because text is a bit bigger. From sharpness point of view, 2560x1440 scaled resolution would be just a bit softer than the exact pixel doubled 1920x1080 mode, however, if you look at a proper distance (greater than 53 cm according to this site), you won't notice too much difference. This was the elaboration about performance. Therefore, if you use 2560x1440 scaling on 27 inch 4K monitor, we could expect that its GPU would easily render the 5K canvas, then downscale it to 4K native resolution without any problems.
2560X1440 ON 4K MONITOR MAC OS PRO
However, when I look at specs of 2017 Macbook Pro 15.4 which is listed here, I can see that it can properly drive two 5K resolutions simultaneously. The performance hit shows itself as stuttering animations on mission control window animations, with addition of fans spinning on higher RPMs.
When Macbook pro is used in any of the scaled resolutions, internally, GPU renders a canvas which is much bigger than the actual 4K resolution, and then downscales it to 4K. When used in "Default for display" mode, which is an equivalent of 1920x1080 UI resolution, performance is great.Īccording to specs of 2015 Macbook pro 13, the limit is to drive a 4K display at 3840x2160 resolution. I am using a Macbook with a 4K 27 inch display, and definitely having performance issues when I use it in one of the scaled resolutions (e.g., 2560x1440, 2304x1296, 3008x1692.).
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