That's nice, but how did the display perform?
Unfortunately, I wasn't able to get my hands on the new 4K displays from Samsung (model U28D590D) or Dell (model P2815Q), so I had to compare the Asus to the much more expensive Sharp PN-K321. Compared to the Sharp, and its IGZO screen, the PB287Q has a limited angle of view. Colors shift as you move left, right, up or down from center. The Sharp's color remained consistent even when viewed at extreme angles. Text on the Asus had a grainy, slightly broken look to it, as if some pixels were missing. It looked better when viewed from a bit of a distance, but it was never as clean as the text on the Sharp display.
The 31.5-inch Sharp has a pixel density of 140 ppi, and the Asus, 157ppi. That increased pixel density makes icons and screen elements appear smaller, which is more of a problem at very high resolutions.
Looking at some test photos, the colors on the Asus were a little muted compared to the Sharp's, but again, the PB287Q costs one-fifth as much as the PN-K321.
If you absolutely need an Ultra HD display to view large images or to work on 4K video, the Asus PB287Q is an affordable, serviceable option. It works best with a DisplayPort 1.2, so make sure that your existing hardware is compatible.
Sign up for Computerworld eNewsletters.