When you buy a premium monitor in this price range, expect perfection. My experience was unfortunately another. The monitor had more defective pixels than any other monitors and LCD TV I've ever seen together. That must not happen at a premium unit on delivery.
I see 2 options:
Option 1: Dell has no individual quality assurance even at such premium devices but leaves this to the customer (including the expenses for the return of a still fairly heavy package.). Then this review is the receipt. The board boasts in huge letters with "Made in China". At the local wages is an individual sighting definitely there, especially considering the fact that the monitor test images for pixel error has already been installed, so that you do not even have to hang it on a computer for the test.
Option 2: The monitor has gone through the QS and was waved through because it is the letter from Dell, according to pixel-error warranty, no warranty. According to the website of Dell, a warranty claim is only recently when a minimum of 6 subpixels are completely failed. And some of the defective subpixels my tester have shone at half speed. Yes, that's. I knew that far either. The Policy of Dell does not take into account that sub-pixel defects are disturbing when they occur as clusters like my monitor, which extends over 2 pixels. My monitor was broken GBRG 4 subpixels in a row. This are 2 adjacent pixels on a white background almost completely black. Technically "only" 4 broken subpixels, but of the human perception ago exactly as if they were. 6
So summarized: Dell does not the price appropriate quality assurance at this monitor series by or allowed too many pixel errors. Meanwhile, everyone should be aware of the ordered this monitor. I can well imagine that this is at 4K panels currently no other way. Then it's just too early to use these as a computer monitor. It changes everything not change the rating.
The monitor goes back and gambling with a replacement device of the same type I will not try for the obvious QA defects. I'm going to buy a much cheaper Monitor with fewer pixels (probably no single pixel errors and). Too bad.