To say it right away: In Dell and Eizo puts the same quality IPS panel from LG. In order to hear apart from looking at least from the front visually very similar case the similarities but also forward to. The Dell shows a typical PWM backlight flickering or shimmering colors with gray gradient test images. In the data sheets of Dell I can find no reference to the backlight control and although several websites claiming to tests, the U2415 have a DC voltage control, I have my doubts. But the peculiarity could also come from the control of the panel. Since Dell promises 6-8 ms gray-to-gray response time, this would also be a possible explanation. The Eizo however, have from 20 percent brightness, flicker-free DC voltage regulation. The factory calibration, enclosed on each U2415 a hard copy report is rather poorly executed. Anyway, my two U2415 completely different color settings during a is reddish, the other monitor is greenish. This runs through all factory profiles. Is said to have taken place where a calibration here, knows well only Dell. The Eizo again but have no pride calibration certificate in box came for all three absolutely identical and clean factory calibrated.
In addition to the picture quality you have to take with the U2415 also smears compared with the EV2455 into account: While the touch buttons on the Eizo EV2455 function superbly, operate the Dell rather unreliable and smack in the necessarily strong pressure. Probably innendrin an adhesive tape, which makes this noise, who knows. As for the overall build quality, so the windshield is inserted wrong, again points the Eizo with better quality. A brightness sensor and a presence sensor have the U2415 not too unlike the Eizo. The brightness sensor I miss a lot, because at noon the sun already seems quite strong in my office. A software for adjusting the monitors and the charging of different profiles depending on the application, there are prepared starting with the Dell Display Manager indeed, but it is not available on the download page for the monitor model and the U2415 is not listed under the compatible monitors for the software. Nevertheless, this software to monitor but then realizes she works unreliable and besides brightness and preset selection does not provide essential functions. For the DDM software does not need a USB connection to the monitor, but communicates directly via DisplayPort with the U2415. Speaking of digital ports: a VGA port no longer has the U2415! For several HDMI and (mini) DisplayPort inputs latter even with possibility for daisy chaining when the graphics card DP1.2 dominated.
There are in addition plenty of shade as well as light: The rear panel is designed by Dell smart, because there is a flap to cover the terminals and connectors as well as a smart grommet in the monitor stand. After calibration with a colorimeter is, after all, the image quality of the Eizo U2415 due to the same IPS panels, at least if you're not prone to the Flickering problem par. Apart from a Dell U2415 is round 200 euros cheaper than a EV2455 Eizo - what is "more favorable" for oneself, now everyone must know yourself but. For the second desk to me anyway rich the cheap Dell - for the main desk would me the U2415 but not enough. On YouTube I uploaded a complete test video because here reaches a length limit of 10 minutes for review videos.