by Njål

4K/UHD Display Connectivity

Large (> 30″) UHD/4K displays are finally starting to become affordable. Some people that I know have purchased cheap 4K tv’s and used them as computer monitors (for developement etc.) It gives you enormous screenspace – and the DPI is comparable to todays monitors (around 100+) – which means you won’t have to scale up fonts etc. like you would on a 28″ UHD/4K monitor. (The font upscaling works is not a problem on OS X – but it can be more painful on some programs in Windows – although it got a lot better in 8.1.)

But there is a big drawbacks with these cheap displays (and especially using them as computer monitors):

They usually only have HDMI (1.3) connections – meaning that you’ll only get a refresh rate of 30Hz. This means that you’ll get lagging – like illustrated below:

Luckily – manufacturers such as Philips and Panasonic are starting to release large 4k tv’s with DisplayPort and/or HDMI 2.0. These standards enables 60Hz+ refresh rates – which eliminates the lagging. DisplayPort 1.3 is currently the best standard of the two.

So make sure your display has DP and/or HDMI 2.0. You will regret buying a UHD device with HDMI 1.3 sooner or later – whether you plan to watch sports or use the display as a computer monitor.

Here are a few options that will soon be in stores:

Panasonic TX­50AX802
This is a 50 inch UHD TV with both DisplayPort and HDMI 2.0 input! Is nice.

Philips BDM4065UC/00
This is a more affordable and smaller 40″ UHD monitor than the Panasonic model. Has DisplayPort. Great Success.