Summary: Others here have talked about the various issues and challenges with this monitor (and 4K monitors in general), so I wanted to contribute something unique to the discussion - a value comparison between this, and the best of the last-gen HiDPI monitors.
Summary: Great potential and a good monitor, great picture quality and size/resolution! But it falls short in there ways 1. DisplayPort 2.0 can only be enabled once a connection has been made. A connection cannot be made until DisplayPort 2.0 has been established. I needed to borrow a third older computer to connect to the monitor to get access to the OSD and enable 2.0, I wasted time and money on another cable because I thought that was the problem. 2.
When it works, it's amazing. But it almost never works.
Andy Dopieralski, Amazon
3 March 2014
Summary: This monitor has an absolutely beautiful panel. And there ends the positive portion of this review. Dell has put a great panel and a wonderful bezel together with the buggiest firmware I've ever encountered in a consumer product. Additionally, the firmware is not user-upgradable. So until it's fixed, DO NOT BUY THIS MONITOR if you intend to use 4k @ 60Hz. It will be nothing but a headache. The display fails to initialize out of sleep mode constantly.
Summary: I just purchased the monitor and have been using it for only 4-5 days, I am happy to report that I don't have any of the problems that other ppl report here or at other review sides. Basically the major problems I have heard were the double monitoring and the failure to wake up from sleep. My monitor was made in January and I am not sure if a firmware was updated before shipping or not, on the box is A00.
Summary: I bought mine straight from Dell and even though I got a great deal on it, I found way too many difficulties for it to work, and even when it did finally sync, it still seemed glitchy. Weirdly enough, the easiest computer to hook it up with was a Mac Mini, yet half the screen was a different tone than the other half. Didn't look like that was a faulty monitor as that symptom itself did not happen with the PC (GTX670 Video card). Ended up returning it.
Summary: Zuerst einmal vorweg, ich bin IT Softwareentwickler und bin bei IT Geräten nicht unbedarft. Meiner Ansicht nach darf man das auch nicht sein bei den aktuellen 4K Monitoren, da sie doch so einige Startschwierigkeiten haben. Diese sind jedem bekannt, der etwas Recherche betreibt. Doch leider war mein Exemplar am Ende nicht mehr zum Arbeiten zu gebrauchen bzw. gab dann auch ganz den Geist auf.