The only 25 "monitor with 2560 * 1440

I wanted as much as possible of the possible resolution 2560 * 1600 use that is possible with DisplayPort 1.1. IPS had to be, not TN.
Monitors of this resolution, there are only 30 ", too big and too expensive.
10% fewer pixels, 2560 * 1440, usually has 27 ", only the Dell U2515H has 25", which still reasonably fit on my desk.
So the question was: This monitor or no new. I wanted more no black frame, but that there is not at the moment.

I use it at the MacBook 6.1. Installation was simple, suitable cable source selection and brightness was about to set. Connecting the cable is bad, the embossed in black plastic label is only with a very bright LED flashlight suggestively recognizable.

The base falls in the design against the screen from clear.
The screen is minimalist, virtually frameless, down a narrow strip with the 5 touch-sensitive buttons. However, the marks so weak that I can not recognize at an optimum for the screen illumination, since almost no light is incident from the front of the screen and therefore not on the bar below. The position of the on / off button can be guessed from the position of the LED, for the other buttons I can only suspect in the area long before the icons appear. Not great, but acceptable.

Height adjustment is marginal for bifocals, but acceptable. The active monitor begins 11 cm above the table, when the slope is maximum.
Orientation is not as big set that you could look centered vertically in deep position on the monitor. This is not even achieved at the top. Amazingly, however, the person anything but vertical viewing angle not interfere.

I have set it only to 15% brightness, as it is only slightly warm at the bottom edge of the screen, to the rather narrow vent above the warming is barely perceptible. Unlike CCFL backlight does not flicker even at the low setting, no stroboscopic effects.

So far I have a NEC 2090UXi (S-IPS, 20 ", 1600 * 1200, built in 2006) is used. Compared to that of U2515H is a consumer monitor, according to the board is designed as a sales package. In spite of the much lower price is the progress of equipment visible:

With the greater pixel density by 20%, the picture is just sharp. In some applications I have turned up the font size from 12 to 13. Sharp it is, but 13 is more convenient.
Of course, the perspective has an effect, but I see only when I look conscious after that.
Colors I can not properly assess, but I think so far unremarkable, as can be expected the supplied measurement protocol.
Interested me less response time is very good compared to my work in the company where I can just work "remotely" ...

For the price, I find the equivalent very decent, I'm pleasantly surprised. What proportion is caused to the good impression by the Retina support of MacOS 10.10.2, I can not say, but the combination is compelling.

Addendum: power, without significant load on the USB ports measured by KD-302:
Standby (turned on, LED lights up): about 0.1W, with my device hardly measurable
Brightness minimal position 0: 15W
Brightness 15: 18,3W
Brightness 50: 26,9W
Brightness maximum, position 100: 37,8W
Add to that the USB ports on the output power, which can be up to 30W.
The information from Dell are so realistic.