Just wikipedia display resolution and also contrast ratio. 900 has EVERYTHING to do with the number of pixels (resolution) it can correctly handel vertically the official aspect ratio of this screen is 32:10 (look in the specs) which is the simplifyed factor of 2880x900px. Contrast ratio (10,000:1) has nothing to do with lpi or number of pixels/image size information on screen just the difference between the depth of the blacks and pureness of the whites so to speak. 900px high wont show 1080p video natively at 100% which kind of defeats the point of these for video editing.