The NVIDIA SHIELD Tablet Review
by Joshua Ho on July 29, 2014 9:00 AM ESTDisplay
While this device is targeted towards gaming, as a tablet it also needs a great display. In order to better test this, we turn to our custom workflow in CalMAN 5 to get a better idea of how good the display is. To start, we’ll look at the basics and move on from there. All of these tests were done with sRGB as it provides the best results.
Unfortunately, it seems that the display is a bit dim compared to the competition. It’s still well within spec and plenty bright for indoor usage, but outdoors it won’t be as easy to read. Contrast is definitely up to par though, and as far as I can tell in normal usage image-dependent dimming is disabled, so the display has a relatively high native contrast.
In the grayscale test, NVIDIA has done a relatively good job in keeping a balanced white point, although error ends up a bit high relative to what we’ve seen recently. It’s definitely acceptable for most users, at any rate. It's important to note here that the grayscale accuracy error average is not just a measurement of RGB color balance, as vision also depends upon the luminance aspect to be correct.
The saturation test is where things start to fall apart. Unfortunately, it’s quite clear that the backlight used in this device just doesn’t have pure enough wavelengths for red and blue, and the result is that the gamut is well below sRGB, around what we see for the iPhone 4/4s and iPad mini line. This may be an attempt to improve power consumption, but I suspect that most are willing to forgo some battery life for a higher quality display. NVIDIA’s sRGB calibration is good up to the 80% saturation mark, but everything else past that point will have the same color, so it’s clear that NVIDIA’s display calibration tries to make do with what it has.
As expected, the ColorChecker shows the results of the poor gamut and some issues present in the grayscale. Error ends up relatively high. The display is still decent, but relative to the competition it doesn’t stack up very well.
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name99 - Tuesday, July 29, 2014 - link
OK. I guess there are situations where that makes sense. Thx.6cef - Tuesday, July 29, 2014 - link
if "closer to 6504k is better", then you should order the graph by the absolute magnitude of the difference between each devices white point and that ideal value.duh.
kyuu - Wednesday, July 30, 2014 - link
+1kae - Wednesday, July 30, 2014 - link
I'll echo the question of a few previous comments... What is the compatibility of the controller with other Android Devices and PC's supporting WiFi Direct? I'm still rocking the Xbox360 Wireless, but if I can ditch the stupid USB dongle and go direct, I'd do it in a heartbeat. Double the function if it also communicates with my N5, and I'm sold.Anyone know? The documentation only talks about how fast WiFi direct is, but not if NVidia is using some proprietary drivers, or if it will work with any device. My hope is the latter.
wintermute000 - Wednesday, July 30, 2014 - link
it always beats me why the big two don't write decent cross platform drivers. Why on earth did Sony not write a good windows and/or android driver for dualshock for example. Easy money (how much can it possibly cost to write a joypad driver) to instantly create a new market.TheJian - Wednesday, July 30, 2014 - link
proprietary, but nvidia is working with google to get it into AndroidL, so should start to work elsewhere soon, if not at least everything shield that comes along and K1 devices etc. A sale is a sale and you're not giving up a lot here, but mapping software (& community profile uploads for mapping to certain games) goes with it so maybe it would be giving away too much.victorson - Wednesday, July 30, 2014 - link
"Although there are some compelling reasons to go with smaller color gamut." Could someone please help out and say what could those reasons be? I'm really curious, always thought there were no such reasons.UpSpin - Wednesday, July 30, 2014 - link
Take a look at the color gamut of white LEDs. You'll see they're blue ones with a phosphor film to produce 'white' light:http://en.wikipedia.org/wiki/Light-emitting_diode#...
However the color reproduction is lacking, especially on cheap white LEDs (the ones you can buy on eBay for example) The more accurate colors you want (high CRI) the more difficult it becomes, they become more expensive and also less efficient. To reproduce all visible colors the best method is to use three separate LEDs, a blue, green and red one. Such a setup is highly inefficient however.
So all NVidia did was using cheap white LEDs to cut costs but also to enhance battery life at the cost of a poor CRI.
theNiZer - Wednesday, July 30, 2014 - link
Great review, very helpfull !cashnmillions - Wednesday, July 30, 2014 - link
Ok so the display isn't phenomenal. Like anyone can really tell the difference between a few pixels. It's an 8" tablet, it doesn't need resolution above 720p to look good. The GPU capabilities are phenomenal, I remember when the Snapdragon and Adreno destroyed the competition about a year ago, this destroys that. I think it's an awesome piece of hardware, I plan to get one, just kind of sucks that the controller is $60. I wonder if I can use an XBOX 360 controller with it like I can on my Nexus 7.