New answers tagged resolution
You can get full resolution with mini DisplayPort to DisplayPort or mini DisplayPort to Dual-link DVI. Dual-link DVI supports up to 2560x1600 pixels resolution. DisplayPort supports that resolution or even higher. You will not get full resolution with mini DisplayPort to DVI. DVI is limited to 1920x1200 or something similar. You usually won't get full ...
You need a Dual DVI adapter to take advantage of the full resolution of your monitor. With a Dual DVI adapter you'll be able to use "...up to 2560 by 1600 pixels on an external display, both at millions of colours"
The videos remain sharp on the retina display because they're scaled down to half their original size (a 720p video is 1280x720, but displayed at 640x360 on YouTube). Images on webpages are usually blurry because in order to display at the same physical size as on a non-retina display, they have to be scaled up 2x (unless the website provides 2x source ...
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