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The operating humidity shows the acceptable level of humidity, in which the display will function flawlessly. It sets a lower and an upper humidity level for safe operation and is measured in percentage. The most widely used panels are those with 6, 8, and 10 bits for each of the RGB components of the pixel. They provide 18-, 24-, and 30-bit color, respectively. Input lag is acceptable, at a touch over 1ms, which leads to a responsive experience. As the panel also refreshes at 160Hz, it's marginally faster and less blurry than current 144Hz options, although the difference is pretty small. We're only talking 11% faster, which is nice to have, but reasonably negligible in the grand scheme of things. Information about the average amount of time, in which the pixels change from one color to another.
The good news: calibrated contrast ratio with our unit was only marginally lower than the 34GK950F, which used older IPS technology. At a 920:1 ratio, it was also higher than our 27GL850 unit, actually 20% higher which is substantial. Desktop monitors and smart TVs experience a latency/lag in visualizing the information. The time in milliseconds that the display needs to visualize the signal input. The storage humidity shows the lower and upper humidity limit, which ensures safe storage of the display. Storing it outside these limits might damage the display. It’s a similar story with the HDR capabilities. The 34GN850 is a clear cut above a typical SDR display for brightness and dynamic range. But it doesn’t get close to the eye-pummeling punch of a true HDR screen. Information about the number of pixels on the horizontal and vertical side of the screen. A higher resolution allows the display of a more detailed and of higher quality image.Out of the box greyscale performance is decent, and indicates some level of factory calibration. Our unit had a very slight warm tone, but good adherence to the sRGB gamma curve by default. These results are above average, particularly deltaE performance, which is fantastic for this sort of panel without any calibration.
The normal mode takes us up a notch to a 4.63ms grey to grey average, also with minimal overshoot. This is quite decent and a good option for those that don't want to tolerate overshoot across the refresh range. However, it's not the fastest nor the optimal choice. If you're looking for something less expensive, you do have alternatives, and the LG 34GN850 remains a premium option.The 34GN850 is also clearly faster than VA offerings, including speedy 200Hz G-Sync Ultimate displays like the Acer Predator X35. Options like the Nixeus NX-EDG34S which have in recent times pushed up to 144Hz with VA panels, are still mid-range contenders and don't really get close to what the 34GN850 is offering. Speaking of things we like, how about the LG 34GN850’s immediate unboxed image quality. The Nano IPS panel is only rated at 1,000:1 for static contrast. That could imply a washed out image and maybe even IPS glow, which are problems some LG IPS monitors do exhibit. But not here. This 34-incher is rich, vibrant, saturated, punchy, and contrasty. Viewing angles are excellent as you'd expect from an IPS panel. Uniformity is a little below average with our unit, the bottom half was slightly warmer than the top half, which is a regression compared to the 34GK950F and this had a similar influence on grey uniformity. However, my 34GN850 had a lot less IPS glow in the bottom left and right corners than my 34GK950F, this monitor (at least our unit) was much better than average for IPS glow and while it's not perfect - very few IPS monitors are - I don't think you'll notice this issue in most conditions. What We Learned
You can really think of this monitor as an ultrawide version of LG's excellent 27GL850. Response times are very similar, you get outstanding viewing angles, top notch wide gamut colors and factory calibration isn't too shabby either. Even IPS glow is improved, especially compared to the 34GK950F. If you're after an ultrawide that delivers an elite combination of speed and visual quality, with the possibility to double as a creative or productivity monitor, there is no better choice than the 34GN850. As for the questions of speed and response, the answer is qualified. The 160Hz refresh will be bags for all but the most hair-trigger honed of esports aficionados. Paired with either G-Sync or FreeSync and a powerful graphics card, this monitor is nothing if not buttery smooth. The percentage of the approximate area, taken by the active part of the screen, to the total front area. The operating temperature shows the safe temperature range (from minimum to maximum), within which the display will function flawlessly. Outside this range it might operate improperly and/or fail entirely.Approximate diagonal size of the display. If the manufacturer does not provide such information, the diagonal is calculated from the width and height of the screen. Approximate width of the display. If the manufacturer does not provide such information, the width is calculated from the diagonal and the aspect ratio. Provided, of course, you have the GPU to drive it. The 3,440 by 1,440 spec isn’t a huge native resolution by today’s standards. But driving it at 160Hz in the latest and greatest titles is no mean feat. But if you've got the hardware, you’re in for a treat. Old school adventures, such as The Witcher 3, look absolutely luscious on this panel. It’s also big enough and detailed enough for a great experience in more strategy orientated stuff like the Total War series. Likewise, aforementioned semi-pro esports types aside, this is a damn fine screen for CS:Go or battle royale larks.
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