Color gamut is measured using a saturation sweep that samples the six main colors (red, green, blue, cyan, magenta, and yellow) at five saturation levels (20, 40, 60, 80, and 100%), providing a more realistic view of color accuracy. Since there are no color management controls on the P2714T, we're only showing the post-calibration graphs (although we’re sure they'd look pretty much the same out-of-box).

The CIE chart up top looks pretty good with the exception of green and magenta, which are clocked slightly away from their targets. All of the saturation measurements are close to correct. The luminance levels also approach the standard, with only 100-percent blue rising to a point that’s about 25 percent too bright. Since that color is also a little under-saturated, the extra luminance isn’t a problem. The overall Delta E errors are all invisible except for 80- and 100-percent green, which can barely be seen. The P2714T offers excellent color accuracy.
Let’s see how the P2714T stacks up against the competition.

A total average of 2.01 Delta E is extremely low. You won’t see any color error on the P2714T. Do you need proof that monitors just keep improving? Dell's excellent is a mid-pack result; not only here. but for all of 2013!
Gamut Volume: Adobe RGB 1998
There are basically two categories of displays in use today: those that conform to the sRGB/Rec 709 standard like HDTVs, and wide-gamut panels that show as much as 100 percent of the Adobe RGB 1998 spec. We use Gamutvision to calculate the gamut volume, based on an ICC profile created from actual measurements. The chart shows the percentage of both sRGB and Adobe RGB 1998 gamuts.

This result is pretty typical of the sRGB monitors we’ve tested. Only a slight under-saturation of blue prevents it from being higher. If you don’t need the larger Adobe RGB 1998 gamut, Dell's P2714T is plenty accurate enough for photo editing and pro graphics applications.
- Dell P2714T: A 27-Inch IPS-Based Touchscreen Monitor
- Packaging, Physical Layout, And Accessories
- OSD Setup And Calibration Of The Dell P2714T
- Measurement And Calibration Methodology: How We Test
- Results: Brightness And Contrast
- Results: Grayscale Tracking And Gamma Response
- Results: Color Gamut And Performance
- Results: Viewing Angle And Uniformity
- Results: Pixel Response And Input Lag
- Touch Or Not, Dell's P2714T Is A Solid Performer
I said it's a crappy idea that's not going to catch on, and I'd prefer not to have to pay extra for it or sacrifice other aspects of the display, like resolution in this case. That said, the companies can put their R&D and marketing $ wherever they want, not my money, but it's still dumb.
So instead of injuring your arms from repetitive stress holding them up in front to touch the screen, you are going to get RSI, cramps or other problems in your neck for staring at a steeper down-angle for too many hours a day... or get both problems, albeit over a longer term than either extreme, if you put the touch-screen somewhere in-between.
This is going to be 'fun' 10-20 years down the road. (As in lawsuits due to not being warned by device manufacturers that extended use of their device in a typical setup may lead to injuries.)
On the plus side, as long as it is only the glass cover getting dirty, it is much easier to clean than a keyboard or mouse.
Kiosks is a nice use of touch since it is pretty easy to "secure" those by simply omitting unwanted access in the UI design with the rest of the system physically locked out - touch-based kiosks have been around for a long time: the first time I have seen a touch-based terminal was in a video rental store about 15 years ago and the menu was in good old 80x25 text mode.
Industrial touch applications are nice too since you can seal the display on the "dirty" hot side of the application and lock the rest on the "clean" cooled weatherproof side.
For everyday computing, touch may also have its uses such as when demonstrating stuff: instead of demonstrating software or page layouts by pointing things out on the screen with fingers and then using a keyboard/mouse to activate the object or navigate pages, clickable things can be demonstrated on-screen - you already have your fingers in there to point things out anyway.