The NVIDIA SHIELD Tablet Review
by Joshua Ho on July 29, 2014 9:00 AM ESTWiFi Performance
For the most part these days it seems that the situation for WiFi is much better in mobile than it is anywhere else, but it's still important to test throughput, especially on a device like the Shield tablet that requires low latency, high bandwidth connections in order to support GameStream and GRID. To this end, while NVIDIA hasn't shipped 802.11ac the Shield tablet ships with a 2x2 antenna configuration for a maximum PHY rate of 300 Mbps. Like the Shield portable, this is a BCM43241 chip, likely shared to improve economies of scale. To look at how it performs, we turn to iperf. Before we get into the results of the test, I'd like to thank ASUS for providing the RT-AC68U router to test WiFi perfomance.
Surprisingly, the Shield tablet performs about as well as some single stream 802.11ac solutions like the one found in the Galaxy Note 3. Performance is generally in line with what we'd expect for such a solution, although it would be nice to see 802.11ac for future products.
Camera
While I currently don't have the means to properly test camera, there are still some things to talk about for camera. Both the front and rear camera modules use OmniVision's OVT5963 sensor, which appears to be a 1/4", 5MP sensor. The rear camera has an F/2.0 aperture with 2.95mm focal length, and the front camera has an F/2.8 aperture, with a claimed 4.76mm focal length, although the field of view appears to be somewhat wider. This is the same sensor as the camera in the Nexus 7 (2013). As a rear facing camera, the quality is nothing special but as a front facing camera it's surprisingly high quality. The photo above is with the rear facing camera, the photo below is from the front facing camera. The stock camera application also doesn't show the correct aspect ratio for the camera, so the preview is cropped.
Audio
While I don't have the equipment available to test audio quality and peak volume quite yet, subjectively the two bass reflex ports and dual front facing speakers make for a great experience. It's definitely a major advantage over other devices when it comes to watching movies and playing games as I don't have to cup my hand around the speaker. The larger size of the tablet formfactor means that the stereo separation is much more obvious. On the headphone jack, the device appears to be using a Realtek RT5639 codec. It seems that NVIDIA has continued to use their own speaker protection system that runs on the SoC, as there isn't any clear evidence of a speaker protection IC connected via I2C.
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cknobman - Tuesday, July 29, 2014 - link
Thought Nvidia had a real killer here.Until I saw how crappy the screen is. On a tablet having such crappy color reproduction is just not going to cut it.
ams23 - Tuesday, July 29, 2014 - link
Overall the Shield tablet display is not bad but not great. The black levels, contrast ratio, and saturation accuracy are quite a bit better on Shield tablet compared to iPad Mini Retina. The max brightness and white point accuracy are slightly better on Shield tablet compared to iPad Mini Retina. The grayscale and GMB accuracy are quite a bit worse, however, and are the two areas that need some work.rodolfcarver - Friday, October 3, 2014 - link
I agree that it's not bad, but the truth is that most games will be just as good on some of the top tablets (http://www.consumertop.com/best-tablets/ ), and they will also be better for all other tasks. Therefore I don't see the point of the Nvidia Shield.willis936 - Tuesday, July 29, 2014 - link
You must have skipped the cpu and gpu benchmarks...ddriver - Tuesday, July 29, 2014 - link
Color accuracy is pretty much irrelevant for gaming.B3an - Tuesday, July 29, 2014 - link
Well yeah, if you're a moron.zodiacsoulmate - Tuesday, July 29, 2014 - link
that's mean... also you are wrong color accuracy is so irreverent in gaming...inighthawki - Tuesday, July 29, 2014 - link
Games already use low resolution color palettes. Textures almost never have more than 8 bits per channel (and are often compressed beyond that), and lighting calculations and sampling error is already going to produce generally "wrong" colors with respect to the real world. You're absolutely fooling yourself if you believe you will see a noticeable difference between this and a more accurate display while gaming.mkozakewich - Tuesday, July 29, 2014 - link
"Games" use an incredibly varied set of graphical abilities. Maybe first-person shooters are different, and a lot of hyper-realistic AAA games in general; but there are plenty of games that are bright or cel-shaded, and those look a lot better on a screen with rich colours.You can't just say a display is good or bad. The reason they give us all these specs is so that we can make our own choices. Someone who plays games with muted or washed-out colours can decided that it's fine, and that this works for them based on the tradeoffs it makes.
inighthawki - Tuesday, July 29, 2014 - link
I agree there are cases, typically indie games, where this is true, but this is an incredibly small subset of the game market, and also generally not the target audience of such a device. The shield seems to be targeted more at heavy gamers, especially those who wish to stream games from a high end PC in another room. These are the people who typically have many AAA titles and games where the graphics are so complex, and the amount of estimation used to compute lighting and texture quality is off from realistic values enough to not even realize that in cases of perfect color reproduction by the display, the game could very easily have a high error from the "real world" value anyway.