macOS renders the screen at 5120 x 2880 to a virtual buffer, then scales it down by 2 x to achieve 2560 x 1440. Display scaling — this method of rendering the screen at a higher resolution and then scaling down by 2 x — is how macOS can render smoothly at many different display resolutions
NOTE: You can use this website to calculate the PPI for any monitor by entering your monitor resolution and monitor diameter as an example a 5K monitor 27 inch 5120X2880 will give you a 217.57 PPI (exactly in the safe zone 220PPI for a Retina display 1440p after scaling as APPLE recommendation)
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⌚️Timestamps:
00:00 – Why I Returned My 4K Monitor
00:55 – MAC Scaling Deep Dive
01:57 – How MAC Scaling Works
05:21 – How To Use MAC Monitor Chart
09:49 – Why Apple Use Weird Screen Resolution
12:12 – Why 27” ViewFinity S9 5K is better then Apple.!
13:16 – Unboxing 27” ViewFinity S9 5K
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NOTE: You can use this website https://www.calculatorsoup.com/calculators/technology/ppi-calculator.php to calculate the PPI for any monitor by entering your monitor resolution and monitor diameter as an example a 5K monitor 27 inch 5120X2880 will give you a 217.57 PPI (exactly in the safe zone 220PPI for a Retina display 1440p after scaling as APPLE recommendation)
I went with the new Dell 2725DS 27" 2560×1440. Ditched the HDMI cord and went with thunderbolt to DisplayPort.
I was lost and really thank you for this wonderful explanation 🎉 I well sell my 4K AND CALCULATE MY NEW DISPLAY❤❤❤
Wow…thank you for the information 😃
Very good
Good ❤and thanks ❤
Thanks for this information❤😊
@MrMahdy thanks for this information. Where did you find the graphic showing Retina PPI sweet spots?
Oh no. I just ordered a 16in 2K monitor:2560 by 1600 to use as an external monitor with my M1 Air. Does it mean it will not work?