Display Uniformity

The uniformity of the QNIX display is where we really start to see the cost savings become visible. As I've found when looking at the ultra-wide displays, the taller the monitor the harder it is to get a backlight uniform to within a certain tolerance. If you have a larger tolerance, it will be cheaper and easier to manufacturer but you'll have less uniform backlighting. This is why professional monitors can be so expensive, and it's an area where it looks like QNIX has managed to save on costs.

Looking at the black uniformity, while the two top corners have a large drop-off in light level, the lower right corner is quite bright.

Looking at the White Uniformity, the same drop-off in light occurs here. Somewhat surprisingly this fall-off occurs in the bright corner as well. The center measures in at 198 cd/m2 but most of the panel drops off below that. Corners fall as much as 22% which is clearly visible if you look for it. If a monitor is within 10% it is hard to tell the difference I find, but once you get to 20% you can notice it when you are viewing something that uses the whole screen.

This causes the contrast on the whole panel to max-out at 750:1. In the corners is can fall as low as 468:1 which is a rather washed out appearance. Overall the contrast is fairly consistent, but the contrast of 750:1 isn’t great to start with.

The real issue is the color uniformity of the QNIX panel. While the center is fine, the edges have visible color shifts. Since we consider a dE2000 error level of < 3.0 to be invisible when in motion, but only 1.0 when looking at still images, these are errors you will certainly see. When it comes to using the QNIX for photo editing and other color critical work, it really won’t work well because of these uniformity issues. 

The uniformity is where the QNIX really falters. It’s the first display with color uniformity errors that fall into the red zone in multiple regions. This could be just my sample, or it could be that the tolerances are lower for backlight alignment, allowing more monitors to pass inspection and lowering prices. I can't be certain but it seems that uniformity is a major area where costs have been saved.

sRGB Test Bench Display Lag, Power Use and Color Gamut
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  • pierrot - Sunday, April 13, 2014 - link

    Aw man, thanks for the reply though!
  • Badelhas - Monday, April 14, 2014 - link

    I have a QNIX QX2710 (normal one, with dual DVI only connection) and it dosent skip any frames at 120Mhz, I also did the test myself. I totally recommend it for gaming.
    I think AnandTech should not be cheap and spend 300 bucks and review that one. The one´s with multiple connections dont OC well.
  • Badelhas - Monday, April 14, 2014 - link

    Please check this forum http://www.overclock.net/t/1384767/official-the-qn...
  • eikast - Monday, April 14, 2014 - link

    I am extremely disappointed due to this article.
    First of all the korean monitors (eBay) are not meant for professional usage. They're meant for gamers who want a reliable 2560x1440 monitor.

    Second of all, you don't purchase the multi input version for gaming. They're horrible at overclocking and have more input lag. The version that only comes with one input (dual DVI) is what should be purchased. I paid $300 for my Xstar (same panel) with single dual DVI back in October. I had zero dead pixels, minimal lightbleeding and am able to OC it to 96 Hz without frame skips.

    I love Anandtech because usually when i come here to see reviews I see good reviews from people who do their research. I made an account just so that I could post this comment.

    If you are thinking about purchasing a korean monitor be sure to check out this link.
    http://www.overclock.net/t/1384767/official-the-qn...
    Much more useful than this article.

    By the way, who the hell OCs a monitor to 110 Hz without trying other frequencies?
    You start in increments and then you up the refresh rate.
  • milkod2001 - Monday, April 14, 2014 - link

    im a bit confused with AHVA panel. Is it something new? Is it better then IPS/PLS?

    I wouldn't mind to pay 50xtra for proper stand with all tilt/shift options something like Dell has and another 50xtra for factory calibrated screen. Pity none of these cheapos have this options. If I'm mistaken plz post a link.
  • vgu - Tuesday, April 15, 2014 - link

    I think the reason that this screen isn't capable of overclocking is because it has lots of processing in order to use DP and the menu system.
    I own the Qnix QX2710 with Dual Link DVI input only, and it overclocks to 120hz without a hitch. Used the same test as author to verify results.
    However, I agree about the colors looking washed out compared to my Dell Ultrasharp.
  • yasamoka - Tuesday, April 15, 2014 - link

    Use a color profile. At 120Hz there is quite the gamma shift.
  • lang15 - Tuesday, April 15, 2014 - link

    You picked one of the versions that does not overclock. The single input models (DVI-D only) CAN overclock easily. Is there anyway you can update the article concerning overclocking using one of these models? Any of these models that have more than one input will not overclock.
  • okashira - Tuesday, April 15, 2014 - link

    Not to mention has inferior contrast, colors and input lag.
    The "regular" QX2710 and DP2710LED are some of the best monitors on the market, period. They offer a combo of features that NO other monitors offer at ANY price point:
    amazing colors
    Good contrast for IPS type display
    zero input lag
    overclockable
    great view angle
    non-pwm dimming
  • Scannall - Wednesday, April 16, 2014 - link

    I purchased a Qnix monitor a couple of years ago now. It was $285 delivered. And it has been great. I guess I won the panel lottery or something as there are no dead pixels, minimal backlight bleed and the color is uniform across the screen. It just has the Dual DVI input, which I don't mind but others may find bothersome.

    There is some element of risk buying these I suppose. With Apple or Dell, you know you will get prompt service or replacement if you're unhappy. But saving $700 made it a gamble I was willing to make.

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