| The biggest problem I've seen is that most laptops can't adequately drive a 4K display. First of all, a lot of them can only drive a 4K display at 30hz (for example, my late-2013 Retina MBP). The currently available HDMI only goes up to 30hz, and DisplayPort 1.2 only supports 60hz with MST enabled. It seems like high-end desktop graphics cards can do this. Second, native 4K on a 28" screen is too small. I can't read it, and my eyes aren't all that bad. I'm guessing a 32" screen would be a bit better, but probably still too small. Any larger than 32" probably wouldn't be feasible as a computer monitor. It seems like 4K would be perfect at HiDPI mode on a 24" screen. Unfortunately, my Macbook Pro can't do HiDPI on a 4K display. 1.5X HiDPI mode (effective 1440p) on a 28" would probably also look good, but my Macbook Pro can't do that either. My guess is that the resolution we really want is 5K @ 27". I was playing around with the Retina iMac at the Apple store, and it was still completely readable at 3200x1800. Unfortunately, Apple apparently had to hack the Displayport spec to get this working, and Displayport 1.3 (which has enough bandwidth for 8K) won't be out for a while. My guess is that we will have reasonable 4K/5K displays as well as computers that can support them in a year or two. |