Dell U3014 LCD Reviewby Chris Heinonen on April 15, 2013 2:00 PM EST
In the last year, 27” 1440p displays went from being really high end in the monitor food chain to becoming close to commodity items that you buy off EBay for cheap from random vendors. It seems that there is a bit of a shift in the high-end display market, where previously resolution was dictating the upper echelon but now as we wait for 4K displays, or retina-style PPI displays on the desktop, it’s other features that are dictating what costs more.
The newest reference display from Dell is the U3014, which takes the place of the U3011. It retains the same 2560x1600 resolution of a 30” display, but adds a few more notable features including DisplayPort MST support, USB 3.0 support, uniformity correction, and most notably it's one of the first LED-backlit displays with an AdobeRGB gamut. Looking only at the specs, this looks like a monitor aiming for the NEC and Eizo users out there, but does it reach those standards?
The LED backlighting this is one of the most interesting things about the U3014. Traditional LED-backlit monitors use White LEDs, which only allow for an sRGB color gamut at maximum. Even then they often struggle to hit the full sRGB colorspace, making LED backlighting more about cabinet looks, and possibly energy use, than about performance. There have been a few exceptions like a Dell laptop and Samsung desktop LCD that used RGB LED backlighting, but typically despite the hype and marking around it LED lighting is usually not a sign of high performance in a monitor, and often it can be a sign of the opposite.
The U3014 uses a GB-LED lighting system, where you have Green and Blue LEDs and a red phosphor that is excited by those LEDs to produce a much larger spectrum of light wavelengths, which allows for a larger color gamut. This article provides some more details and even talks about Quantum Dots, which Sony is starting to use on their TVs and you might see in a computer monitor at some point as well. To give another example of the wider gamut these can produce, here are the spectral signatures recorded in CalMAN using the Dell U3014 and the Nixeus VUE 27” and its standard White LEDs.
Looking at these two charts (which are a bit confusing, I admit), we see that the level of blue output is similar from both, which we expect with LEDs. What you see on the Dell is a much higher level of green and red spectrum available, which is what allows for the larger color gamut to be used. Previously we’ve had to rely on CCFL lamps to do this larger gamut, but now with some LED tricks and a matching red phosphor, we can have LED illuminated displays that utilize a larger gamut.
Of course you also have the assumption that more colors = better, right? Well, unfortunately that isn’t the case. If you only have a larger gamut and not software that understands how to use that gamut, what you get are colors that are further outside of the gamut than they should be. Greens are too green, reds are too red, and everything looks like a badly calibrated OLED smartphone. Anyone buying something like the U3014 is going to need to have accurate colors in any colorspace, and the Dell offers an sRGB mode as well.
In addition to the preset sRGB and AdobeRGB modes, Dell offers two custom CAL1 and CAL2 modes that their calibration software can set to any gamut and white point you want. I will look at this in a moment and cover its performance.
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Kevin G - Monday, April 15, 2013 - linkThat Sharp display I've seen at sites going for $4500. Still expensive but a definitive step up in terms of resolution from this Dell. I'd love to see a review of it here at Anandtech. *hint* *hint* *hint*
jibberegg - Monday, April 15, 2013 - linkApparently Seiki are offering 50" 4k for $1,500. Anyone heard of them? I smell bad things at that price, but don't want to write it off without more information.
SeannyB - Monday, April 15, 2013 - linkThe current HDMI spec only does up to 30Hz in 4K. This is the thing that stops me from buying one right now, because using Windows or whatever at 30 frames per second is miserable.
Kevin G - Tuesday, April 16, 2013 - linkDigging through the Seiki manual indicates that 30 hz is the best frame rate it can get at 4k resolutions. Might be fine for video as the source material in all likelihood doesn't exceed this rate.
Another passable usage would to use it as a large format display for 2D imagery. This would be the equivalent of four 1080P 25" monitors of screen space, minus the bezels. Color quality and calibration controls are an unknown, so this use-case is iffy.
For gaming, this refresh rate is going to be horrible.
cheinonen - Thursday, April 18, 2013 - linkFYI, it has no calibration controls at all: no white balance, no CMS, no gamma, nothing. So if you want an accurate image, double the price to include a DVDO or Lumagen box, and those don't work with 4K material yet.
SantaAna12 - Monday, April 15, 2013 - linkApples to apples???
High end monitor review....no comparison to Apple.
Hmmmmmmm.......your welcome Dell!
cheinonen - Monday, April 15, 2013 - linkI didn't review the Apple, Anand did himself, and it was with our prior test bench. It's also a white LED backlit model with the sRGB gamut, not a CCFL or G-B LED backlight with AdobeRGB gamut, or any sort of uniformity control. It's a high-end, general use 27" display, not a professional photographer/graphics display, which this is. There isn't a lack of a comparison to spare one of them, they're different markets, with different test bench data.
p05esto - Monday, April 15, 2013 - linkYou are out of your mind if you think an Apple monitor could touch this. lol, just another clueless Apple sheep.
Kevin G - Monday, April 15, 2013 - linkHave you tested the MST functionality of this device? I'd to see how this works out, especially with this and a DP 1.1 monitor.
cheinonen - Monday, April 15, 2013 - linkI did, and it's discussed in the article. Worked fine with the monitor I have here, with a couple of caveats.