Display Analysis

When you consider that the Surface Pro has one of the best displays in a PC, it’s never going to be a bad thing for Chuwi to leverage Microsoft’s panel production in order to outfit their devices. This isn’t the only Chuwi device which has the same panel as a Surface either; the Chuwi Hi-13 2-in-1 tablet uses the 3000x2000 13.5-inch panel from the Surface Book. Maybe we’ll get lucky and they’ll release an AIO with the Surface Studio’s 28.125-inch 4500x3000 display too. They seem to have no qualms about using these panels, and the customer is the winner in the end.

It’s fair to say that none of us really wanted the laptop industry to move to 16:9 displays, but when HDTV standardized on that aspect ratio, the entire industry built their tooling around that, so anyone offering anything other than 16:9 would be doing so at a significant increase in cost. That ended the 16:10 aspect ratio for pretty much all devices, although a few tablets did end up using it, without much success.

When you consider that much of what we do on a laptop involves height, it really has been a shame to see the taller displays disappear, but with the success of the 3:2 aspect on some devices, it’s great to see a PC manufacturer like Chuwi step in and utilize that supply chain.

With 267 pixels per inch, this is certainly in the realm of High DPI for most people. Windows can still struggle with that, although for most tasks, it’s not the issue it once was. Some apps, like Steam, can still be a pain in High DPI, but if you’re looking at a LapBook 12.3, you can pretty much ignore Steam anyway. The high number of pixels per inch, coupled with the taller than normal display, really do make a difference.

Some may recall that the Surface Pro lineup, which shares this display panel, is also one of the most accurate displays around, but Microsoft calibrates each display at the factory. It’s pretty much an impossibility that Chuwi would be able to do the same, considering the different price categories these two devices are in, but to see how the LapBook 12.3 fares, we’ve tested it with SpectraCal’s CalMAN software suite, along with an X-Rite i1Pro2 colorimeter for brightness and contrast testing, and the X-Rite i1Pro2 Spectrophotometer for color accuracy testing.

Brightness and Contrast

Display - Max Brightness

Display - Black Levels

Display - Contrast Ratio

Although the backlight on the Chuwi LapBook 12.3 doesn’t get overly bright, it does have great contrast ratios, with a very dark black on this LCD display. It’s impressive that such an inexpensive laptop can have this kind of contrast. For those looking to use the LapBook in the dark, it’s not advisable since it doesn’t have a backlit keyboard, but also because the display only goes down to 37 nits at 0% brightness, which is still pretty bright for a very dark room.

Grayscale

SpectraCal CalMAN

Display - Grayscale Accuracy

Here’s the first indications that Chuwi hasn’t bothered with calibrating this panel at all. Grayscale on the LapBook 12.3 is quite awful. The grayscale results show the green values climbing as the brightness level increases, and at maximum brightness, the dE2000 is well over 10. It’s just not good, but it’s also expected at this price point.

Gamut

SpectraCal CalMAN

Display - Gamut Accuracy

The panel and backlighting actually does a decent job covering the sRGB gamut, with 100% color levels that are quite close to the correct levels. The white point is what throws the average up so high, and here we can clearly see the white point drifting into green quite a bit.

Saturation

SpectraCal CalMAN

Display - Saturation Accuracy

Much as we saw at the extreme 100% levels in the Gamut test, the saturation sweep shows a similar picture. The color levels are surprisingly solid on this device, and it’s mostly let down by the white point.

Gretag Macbeth

SpectraCal CalMAN

Display - GMB Accuracy

The most comprehensive test is the Gretag Macbeth, which doesn’t just test the primary and secondary colors, but also mixes in many other shades, as well as the important skin tones. The overall average is actually pretty decent again, although values under 3.0 would be better. Looking a the colors, most of them are decent but the whites and blacks show the most error.

Relative Colorchecker

Just to get a perspective on what these errors would look like, we’ve also run the colorchecker on the LapBook. Note that this is a relative error level, since any errors on your own display may affect the picture. Colors on the bottom are the target, and what’s displayed on the panel is on the top.

SpectraCal CalMAN

Here you can easily see the green cast on this display, but as we saw in the other tests, the color levels are much stronger.

Display Conclusion

It feels like its almost a shame that Chuwi wasn’t able to calibrate these devices at the factory, since the grayscale would be easily correctable and would make this display one of the best around, but thanks to it’s ultra-low price point, a calibrated display would be a bit of a stretch to expect. Still, the highlights of this display are the pixel density and aspect ratio, and for most people buying this laptop, the green cast isn’t going to be a huge issue, especially if they are coming from a TN display.

System Performance Battery Life and Charge Time
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  • cfenton - Wednesday, September 6, 2017 - link

    How are they doing 6GB of RAM in dual-channel? Is it just Flex Mode, or am I wrong that dual-channel only works fully with matching capacities?
  • Ryan Smith - Wednesday, September 6, 2017 - link

    Apollo Lake supports LPDDR4, which is readily available in 12 and 24 Gbit sizes.
  • cfenton - Saturday, September 9, 2017 - link

    I had no idea. Thank you for the answer.
  • serendip - Wednesday, September 6, 2017 - link

    What's with the poor battery life? I've got a Teclast tablet with an iPad screen (how do they get these surplus parts?) and it lasts 9-10 hours with web browsing or Excel crunching. It uses a more efficient but slower Z8500 Atom and a smaller yet still hi-DPI screen.
  • sarscott - Wednesday, September 6, 2017 - link

    Bought the Chuwi 14.1 Lapbook and the screen is great for the price and I like the look and feel very much. There is one major fault that is causing me to return the Lapbook: Overheating! When cool, in a very cool room, the laptop performs great but even in an air conditioned room at 74 degrees the laptop overheats just trying to play a 10 bit HVEC mkv. There is a mod to add a copper shim but I feel that is too much effort for the price. Of minor annoyance is the trackpad requires a complete reinstall of the Windows OS to function normally as a touchpad. Otherwise the touchpad is only recognized by Windows as a mouse which disallows any sort of modification of the Touchpad like disabling the horrendously dysfunctional Tap to Click function. One minor downside is the internal eMMC is slow but you can install a m.2 SSD to make the Lapbook much faster. In summation, if I have to spend time and money installing a copper shim and m.2 SSD the $270 price I paid seems too much as I can buy a Spin 5 with an i5, 8GB of ram, 256 SSD, and better IPS display for $450 brand new at Walmart. The SSD alone adds $100, then factor in my time and extra cost for the shim and thermal paste and your close to $400 already! For any extra $50 to $70 you can get a much better laptop, albeit not as thin, with a better warranty and english speaking customer service!
  • kmmatney - Wednesday, September 13, 2017 - link

    I haven't not purchased this laptop, but have had similar experiences with other chinese products. Just too many problems, both software-wise and hardware wise, and usually it's hard to get support. It's just better to just pay a little bit more for a known brand like Acer, etc... Not much more money, but much better quality control and support. For now, I've completely given up on electronic products from lesser known chinese brands.
  • Nevod - Thursday, September 7, 2017 - link

    Just recently I've been looking through convertible atombooks looking for something with Surface display, yet there was nothing. The best thing was Acer Spin 1, but it has it's drawbacks and second generation is slowly coming out.
    Now there's this, but without touch and on a 12" display, not 13". And Gemini Lake is coming out.
    Maybe 6 mothns later something really optimal will appear.
  • vortexmak - Thursday, September 7, 2017 - link

    Can you please review the Chuwi Surface competitors
  • LiverpoolFC5903 - Friday, September 8, 2017 - link

    A Core M3 or M5 machine would have been a good inclusion in the benchmarking process. Its GPU is significantly better than the first gen Core M.

    You can get machines like the Cube i7 book for 350 USD, with a Core M3 (M6Y30), Full HD IPS panel with multi touch support, a 64/128 GB SSD + Full keyboard + trackpad. All the works are there.

    Compare that with this. The processor in the Chuwi is at best a tablet processor. Its going to struggle with anything remotely intensive, including basic software like SPSS or Stata.
  • Hurr Durr - Friday, September 8, 2017 - link

    >basic software
    >IBM analytics

    Yeah, right. I guess Photoshop is a basic image resizing program as well now.

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