lg 34gn850 monitor

Bottom Line

The LG 34GN850 is an excellent monitor for the price! It offers flawless performance thanks to its rapid response time, low input lag, high refresh rate, and certified G-SYNC compatibility. Moreover, its Nano IPS panel ensures vibrant colors which along with the 3440x1440 ultrawide resolution makes for a stunning and immersive viewing experience.

Design:
(4)
Display:
(4.8)
Performance:
(5)
Price/Value:
(4.5)
4.6

Introduction

The LG 34GN850 is the successor to the popular LG 34GK950F gaming monitor. It features a similar 34″ 3440×1440 144Hz Nano IPS panel, but with a notably faster 1ms GtG response time speed and certified G-SYNC compatibility.

Image Quality

Based on LG’s Nano IPS panel, the LG 34GN850 delivers incredibly vibrant and punchy colors covering 98% of the DCI-P3 color space (equivalent to ~135% sRGB).

Of course, such wide color gamut can make sRGB content (which includes most of games and web content) appear over-saturated. Luckily, the LG 34GN850 monitor has an emulated picture mode for sRGB content.

This mode will restrict the color output to ~100% sRGB allowing you to enjoy more accurate color representation for sRGB content. Note that the brightness setting is not locked in this mode on this monitor.

Regardless of whether you’re watching sRGB or DCI-P3 content, you’ll get accurate, consistent, and gorgeous colors!

The monitor has a peak brightness of 400-nits which means it can get more than bright enough even in well-lit rooms while the static contrast ratio amounts to 1,000:1.

As it’s the case with all IPS panel displays, the contrast ratio is not their strongest point. In comparison to VA-panel monitors, blacks won’t be quite as deep on the LG 34GN850.

Then again, VA monitors have disadvantages of their own such as significantly slower pixel response time speed, and they don’t have as wide viewing angles nor as consistent colors.

The LG 34GN850 has 178° wide viewing angles allowing you to watch the screen at basically any angle without the picture degrading in quality in any way (color, brightness, or contrast).

Further, the 3440×1440 screen resolution results in a perfect pixel density on the monitor’s 34″ sized screen.

With roughly 110 pixels per inch, you get plenty of screen space and sharp text/details without any scaling needed.

The 21:9 ultrawide format makes compatible games, videos, and movies significantly more immersive, and you also get extra horizontal workspace for productivity and editing work.

Lastly, the LG 34GN850 display supports HDR (High Dynamic Range), but for a notable improvement in HDR picture quality, a monitor would need a much higher brightness and contrast.

However, that would require an expensive local dimming system such as that of the Acer Predator X35 (~$2,500).

With the LG 34GN850, you just get a glimpse of HDR, but thanks to its wide color gamut, some HDR content will look a bit better.

Performance

freesync and gsync

The LG 34GN850 has a very low input lag of ~4ms which makes for imperceptible delay between your commands and the result on the screen.

Next, the response time, which is the speed at which pixels transition from one color to another, is excellent as well!

There are four response time overdrive modes: Off, Normal, Fast, and Faster. We recommend just using the Normal mode as ‘Fast’ and ‘Faster’ are too aggressive and introduce inverse ghosting.

The Normal mode eliminates all prominent trailing behind fast-moving objects without adding any pixel overshoot.

You can also overclock the monitor from the native 144Hz refresh rate to 160Hz. However, due to the DisplayPort 1.4 bandwidth limitations, you will need to use 8-bit color depth or chroma subsampling for over 144Hz.

Since both – the difference between 8-bit color and 10-bit color – and the difference between 144Hz and 160Hz is not all that noticeable in games, this isn’t really worth stressing over.

In minority of games which support 10-bit color depth, you can drop the refresh rate to 144Hz, but for the most part, we recommend going with 160Hz and 8-bit color depth.

We recommend against using 4:2:2 chroma subsampling as it makes the text appear smudgy and fringy.

Moving on, the LG 34GN850 supports AMD FreeSync with a 48-160Hz VRR (variable refresh rate) range, and it’s certified by NVIDIA as G-SYNC Compatible.

At the time of this writing, it’s the only 3440×1440 ultrawide gaming monitor with the official certification.

VRR synchronizes the monitor’s refresh rate with GPU’s frame rates and thus removes all screen tearing and stuttering with minimal input lag penalty (~1ms) up to 160Hz.

Another thing to keep in mind about IPS monitors is IPS glow. This is an expected drawback of this panel technology which is characterized as visible ‘glowing’ around the corners of the screen.

The amount of IPS glow varies across different units of the monitor, but in most cases, it’s only visible on really dark backgrounds (in a dark room). In all but the most extreme cases, it’s completely manageable.

Features

To access the OSD (On-Screen Display) menu of the monitor, you can use LG’s On-Screen Control application or the joystick placed beneath the bottom bezel of the screen.

You will find all the standard image settings as well as some advanced adjustment tools such as color temperature fine-tuning (in 500K increments), four gamma presets, and 6-axis hue/saturation.

Other useful features include Black Stabilizer (improves visibility of objects in shadows), custom crosshair overlays, and various pre-calibrated picture presets (FPS, RTS, sRGB, Reader, and two customizable Gamer profiles).

The monitor has a flicker-free backlight and an integrated low-blue light filter. These two features prevent headaches and eye strain caused by using the monitor for extended periods of time.

Design & Connectivity

lg 34gn850 monitor back

The LG 34GN850 has ultra-thin bezels while the design is sturdy and versatile with up to 110mm height adjustment, -5°/15° tilt, and 100x100mm VESA mount compatibility. You cannot pivot or swivel the screen though.

In addition, the screen has a matte anti-glare coating which eliminates reflections, but doesn’t make the picture appear too grainy while the steep 1900R curvature adds to the overall immersion.

Connectivity options include DisplayPort 1.4, two HDMI 2.0 ports (max 85Hz at 3440×1440), a headphones jack, and a dual-USB 3.0 hub (1 upstream + 2 downstream ports).

FreeSync is supported over both HDMI (48-85Hz) and DisplayPort (48-160Hz), but for the G-SYNC Compatible mode, you’ll need to use DisplayPort and have a compatible GPU (GTX 10-series or newer).

Price & Similar Monitors

The LG 34GN850 goes for ~$1,000 which is a reasonable price considering that the previous-gen model can be found at a similar price yet it’s notably slower.

All in all, if you want a 3440×1440 144Hz ultrawide monitor with a fast response time speed, striking colors, and smooth VRR performance, it’s definitely the best model you can get under $1,000.

In case you’re looking for something similar but cheaper (~$450), check out the AOC CU34G2X with a VA panel and a higher contrast ratio, but slower response time and imperfect VRR performance.

Conclusion

Thanks to its high ultrawide resolution and wide color gamut, the LG 34GN850 delivers an incredibly immersive viewing experience while the high refresh rate, quick response time, and FreeSync ensure responsive gameplay.

LG 34GN850 Specifications

Screen Size34-inch
Screen Curvature1900R
Resolution3440×1440 (UWQHD)
Panel TypeNano IPS
Aspect Ratio21:9 (UltraWide)
Refresh Rate144Hz (10-bit color)
160Hz OC (8-bit or 10-bit w/ 4:2:2)
Response Time1ms (GtG)
Adaptive SyncFreeSync (48Hz-160Hz)
G-SYNC Compatible
PortsDisplayPort 1.4, 2x HDMI 2.0
Other Ports2x USB 3.0, Headphone Jack
Brightness400 cd/m2
Contrast Ratio1000:1 (static)
Colors1.07 billion (8-bit + FRC)
98% DCI-P3
HDRHDR10, VESA DisplayHDR 400
VESAYes (100x100mm)

The Pros:

  • Wide color gamut with emulated sRGB mode
  • Quick pixel response time speed
  • Certified G-SYNC compatibility
  • Plenty of features including FreeSync up to 160Hz
  • Ergonomic stand with rich connectivity options

The Cons:

  • IPS glow and inferior contrast to VA panel variants
  • Design lacks swivel option

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