The LG 27GL850 is a great 1440p monitor. It has outstanding motion handling, with one of the fastest response times we've ever measured. This results in exceptionally clear motion in any scene, with almost no blur behind fast-moving objects. It also has outstanding low input lag for a responsive gaming experience. This monitor supports AMD's FreeSync variable refresh rate (VRR) technology, but it's also NVIDIA certified as G-SYNC compatible, so VRR works automatically with a recent NVIDIA graphics card. Unfortunately, like almost all IPS monitors, it doesn't look as good in a dark room, as it has a disappointing contrast ratio and bad black uniformity.
The LG 27GL850 has a good design. It looks very similar to other LG UltraGear gaming monitors, but with a slightly different design on the back and on the stand. Like the LG 32GK650F-B, it has a decent height and tilt adjustment, but unlike the larger models, it can't swivel. This monitor has decent build quality, but it's almost entirely made of plastic.
The stand on this monitor is very similar to other LG UltraGear monitors, including the LG 34GK950F. Like many other LG monitors, the stand has a wide footprint, but it's very narrow, so it doesn't restrict you from placing things in front of the monitor.
This monitor has passable ergonomics. It has a decent height adjustment and tilt range, and it can rotate to a portrait orientation, but it can't swivel.
The borders of the 27GL850 are very thin on three sides, and they aren't very distracting. The bottom bezel is a bit thicker, but it doesn't stand out much.
The display portion of the LG 27GL850 is very thin, and looks great VESA-mounted. Even when mounted on the stand, it doesn't stick out much.
The LG 27GL850 has decent overall build quality. The outer casing is almost entirely made of plastic, but there aren't any obvious weak points or points of concern.
The LG 27GL850 has decent overall picture quality. It has great accuracy out of the box, good peak brightness, and decent reflection handling. This monitor has an excellent SDR color gamut, and it can display a wide color gamut for HDR content. It also has outstanding gradient performance, and there is almost no noticeable banding in any color. Like most IPS monitors, though, it has a disappointing contrast ratio and bad black uniformity, so it isn't a great choice for dark room viewing.
The LG 27GL850 has a disappointing contrast ratio. Although IPS monitors usually have low contrast, this is worse than average. This monitor can't display deep blacks, and this is especially noticeable in a dark room.
This monitor doesn't have a local dimming feature. The above video is provided for reference only.
The LG 27GL850 has good peak brightness in SDR. There shouldn't be any issues overcoming glare in a bright room. There is no noticeable variation in peak brightness with different content.
Unfortunately, the LG 27GL850-B has mediocre peak brightness in HDR. It can't get bright enough to show off small, bright highlights in HDR movies. Most HDR games look good, but again, bright highlights don't stand out as much as they should.
While trying to measure the HDR real scene peak brightness, we encountered a bug, and the monitor started to flicker. We don't know why this happened, and we didn't encounter it with our other HDR tests.
Like almost all IPS monitors, the LG 27GL850 has decent horizontal viewing angles. The black levels decrease very slowly, so the image doesn't wash out as much as with TN or VA monitors, like the Dell S2417DG or Samsung CHG70. There is a noticeable decrease in brightness at wider viewing angles, and colors gradually shift and lose accuracy, but this shouldn't be an issue under normal use.
Great vertical viewing angles. Like the horizontal angles, there is very little variation in black levels, so the image doesn't wash out. The brightness decreases gradually and colors lose accuracy, but these shouldn't cause any issues, even if you're sitting close to the screen.
Excellent gray uniformity on the LG 27GL850. There is some very slight vignetting, and a bit of dirty screen effect in the center, but neither of these are very noticeable with normal content.
Unfortunately, this monitor has bad black uniformity. There is noticeable backlight bleed, especially from the bottom-right corner on our unit. This might vary between units, though. Let us know if you get a unit with better black uniformity.
Update 09/12/2019: Changed results to the sRGB color mode, with more accurate colors.
The LG 27GL850 is factory pre-calibrated, and it has great accuracy out of the box. There are a few noticeable color errors, but the white balance is outstanding, and the color temperature is extremely close to the calibration target. Gamma doesn't follow the sRGB target curve, though, so most scenes aren't displayed at the proper brightness.
After calibration, this monitor has outstanding accuracy. Colors are displayed almost perfectly, and any remaining inaccuracies aren't noticeable. Gamma follows the target curve almost perfectly, and the white balance is even better than the factory calibration.
You can download our ICC profile calibration here. This is provided for reference only and should not be used, as the calibration values vary per individual unit even for the same model due to manufacturing tolerances.
s.RGB Picture Mode: Gamer 1 (calibrated)Adobe RGB Picture Mode: Gamer 1
This monitor has an outstanding SDR color gamut. It can display the entire sRGB color space, which is used by the vast majority of current SDR content. It also has great coverage of the wider Adobe RGB color space, great for professional photo editing.
s.RGB Picture Mode: Gamer 1 Adobe RGB Picture Mode: Gamer 1
Outstanding SDR color volume. It's mainly limited by the disappointing contrast ratio, as it can't display dark, saturated colors very well.
DCI P3 Picture Mode: Gamer 1 Rec. 2020 Picture Mode: Gamer 1
Decent HDR color gamut. It has good coverage of the DCI P3 color space used by most current HDR content, but only decent coverage of the wider Rec. 2020 color space. Very few monitors have good coverage of Rec. 2020, though.
DCI P3 Picture Mode: Gamer 1 Rec. 2020 Picture Mode: Gamer 1
Decent HDR color volume. It's limited by the color gamut and the low native contrast, as it can't display the full range of colors, and can't display dark, saturated colors very well.
There are no signs of temporary image retention on this monitor, even immediately after displaying our high-contrast, static test image for 10 minutes.
The LG 27GL850 has outstanding gradient handling. There is some very slight banding noticeable in darker shades of blue, but this shouldn't be an issue for most people.
There is some extremely minor vertical color bleed, but this isn't at all noticeable with regular content.
The LG 27GL850-B has outstanding motion handling. It has one of the fastest response times we've measured so far on a monitor, resulting in extremely clear motion with almost no blur behind fast-moving objects. The backlight is completely flicker-free at all brightness levels, which is great, but there's no optional black frame insertion feature. It has a great refresh rate, and it supports AMD's FreeSync variable refresh rate (VRR) technology. It's also certified by NVIDIA as G-SYNC compatible, so VRR works automatically when connected to a recent NVIDIA graphics card.
|Mode||Response Time Chart||Motion Blur Photo|
The LG 27GL850 has an outstanding response time, better than almost any monitor we've tested so far. Some of the transition times are even faster than 240Hz TN monitors we've tested, including the HP OMEN X 25f. This results in exceptionally clear motion in any scene, with almost no blur trail behind fast-moving objects.
Like other LG UltraGear monitors, the overdrive can be changed between four levels. We found that the 'Fast' level performed the best. 'Faster' has a slightly faster 80% transition time, at 1.5ms, but we found it to be completely unusable. There is significant overshoot, as can be seen in the above photo. In 0-20% transitions, the overshoot is so high it actually clips on our response time tool, which is shown by the flat line on the response time chart in the table above.
The backlight is completely flicker-free at all backlight levels, which is great. There is no optional black frame insertion feature though, but the response time on this monitor is so fast that it doesn't really matter.
We encountered a bug while testing the HDR real scene peak brightness that caused the screen to start flickering at 60Hz. We don't know why this happened, and we didn't notice it at any other time.
The LG 27GL850 has an excellent 144Hz refresh rate. It supports AMD's FreeSync variable refresh rate technology, but it's also certified by NVIDIA as G-SYNC compatible, so it'll work automatically with a recent NVIDIA graphics card.
Over HDMI, the 27GL850 can only reach 100Hz at the monitor's native resolution of 1440p. At 1080p, it can reach 120Hz.
The LG 27GL850-B has outstanding low input lag, even in HDR or with a variable refresh rate. Unfortunately, it has higher than average input lag with 60Hz content, which isn't ideal for console gaming, although it's still low enough for most gamers. The 1440p, 27" screen delivers a great amount of screen real-estate, making it easier to multitask, and it allows you to see more fine details in your favorite games.
Outstanding low input lag at the monitor's native format, even with FreeSync enabled or in HDR. The 60Hz input lag is higher, though, which might disappoint console gamers.
The 1440p, 27" screen delivers a great amount of screen real estate, and is great for multitasking. This is also great for gaming, as you can see more fine details in your favorite games.
The LG 27GL850 has the same inputs as the LG 34GK950F-B. There is an analog audio out port, and the volume can be adjusted through the display's OSD.
This is a fairly basic gaming monitor, with very limited additional features. It has an optional 'Black Stabilizer' feature, and it can add a virtual crosshair to any game, but it doesn't support picture-in-picture or picture-by-picture. The controls are easy to use, and the on-screen display is easy to navigate. It's also compatible with LG's OnScreen Control software, which allows you to change many of the monitor's settings, as well as update the firmware.
There are very few additional features on this monitor. Like other UltraGear monitors, it can display a virtual crosshair on any game. There is also a 'Black Stabilizer' feature, which adjusts the gamma in dark scenes, making it easier to spot objects in the shadows.
The LG 27GL850 has no integrated speakers, and it doesn't support picture-in-picture or picture-by-picture.
Like most recent LG monitors, the 27GL850 has a single joystick nub located underneath the center of the monitor. It works very well, and is very easy to use to navigate the monitor's on-screen display.
We tested the 27" 27GL850-B, which is the only size available. There are other models in LG's UltraGear lineup, some of which are listed in the table below.
If someone comes across a different type of panel or if their 27GL850 doesn't correspond to our review, let us know and we will update the review. Note that some tests such as the gray uniformity may vary between individual units.
|27GL850-B||27"||1440p||144Hz||FreeSync, NVIDIA certified|
The 27GL850-B we reviewed was manufactured in June 2019.
The LG 27GL850-B is a great gaming monitor with outstanding motion handling. It has worse ergonomics than most comparable models, but if this doesn't matter for you it's a great choice. See also our reviews for the best gaming monitors.
The Gigabyte Aorus AD27QD and the LG 27GL850 are very similar overall. For gaming, the LG has slightly better motion handling, and is the better choice if you are sensitive to motion blur or overshoot artifacts. The AD27QD is more feature-packed, including better ergonomics, an optional black frame insertion feature, and countless additional gaming features.
The ASUS ROG Swift PG279Q and the LG 27GL850-B have very similar overall performance, but they have some significant differences. The LG supports HDR, supports FreeSync, and has better gradient thanks to its 10-bit panel. The ASUS, on the other hand, has better ergonomics, supports G-SYNC, and has an optional black frame insertion feature to help improve the appearance of motion.
The LG 27GL850-B is slightly better than the ASUS ROG Swift PG279QZ for most uses. For gaming, the PG279QZ has better ergonomics, and an optional black frame insertion feature, but if these aren't very important to you, the 27GL850 has better motion handling overall, with a better response time, and it supports HDR.
The LG 27GL850-B is slightly better than the ASUS VG279Q for most uses. The LG has a higher resolution screen, and it supports HDR. The VG279Q has much better ergonomics and an optional black frame insertion feature. The LG has better motion handling overall, with a faster response time that delivers extremely clear motion, with almost no blur behind fast-moving objects.
The two monitors use different panel technologies, each with advantages and disadvantages. The LG 27GL850-B hs an IPS panel that allows wider viewing angles, whereas the Samsung CHG70 has a VA panel and offers better dark room performance thanks to the much better contrast ratio and local dimming feature. The LG has slightly faster response time, but the Samsung has a black frame insertion feature that can help make motion look crisper.
The LG 27GL850-B is better than the Acer Predator XB271HU. The LG supports HDR and can handle reflections better, which is important when there are a few lights in your room. The Acer, on the other hand, has a black frame insertion feature that helps make the image look crisper.
The LG 27GL850-B is much better than the Dell S2719DGF for most uses, especially if ergonomics aren't important for you. The LG has much better picture quality, with wide viewing angles, much better gradient handling, and HDR support. The LG also has slightly better motion handling, with a slightly faster response time, resulting in slightly clearer motion.
The LG 27GL850-B is slightly better than the 27GL650F-B. The 27GL850-B has a faster response time, resulting in clearer motion with less blur. The 27GL850 also has a better native resolution, so you can see more fine details in your favorite games, and it has an optional USB hub.
The LG 27GL850-B is better than the Acer VG271UP. The LG 27GL850-B has better ergonomics, so you can position it to your liking with ease, and has a faster response time that helps deliver slightly crisper motion. The Acer VG271UP has an optional Black Frame Insertion feature to make motion crisper, and although it has marginally better contrast, its terrible black uniformity is noticeable in a dark room.
The LG 27GL850-B is marginally better than the LG 27UK650-W. The 27UK650 has a full 4k resolution which favors multitasking. On the other hand, the 27GL850 is steered more towards gaming as it has a higher refresh rate, a much lower input lag and faster response time which leaves only a small blur trail behind fast-moving objects.
The LG 27GL850-B and the MSI Optix MAG271CQR use different panel technologies, each with their own strengths and weaknesses. The MSI looks better in a dark room, as it has better contrast, but the LG has better viewing angles, and it supports HDR. The Optix has an optional black frame insertion feature, and it has better reflection handling.
Although they use different panel technologies, the LG 27GL850-B is much better than the Acer Nitro XF252Q for most uses. The 27GL850-B has better gray uniformity, much better viewing angles, and a larger, higher resolution screen. The Nitro XF252Q, on the other hand, has an optional black frame insertion feature and better ergonomics.
The LG 27GL850-B is much better than the HP OMEN 27 for most uses, but they offer very similar performance for gaming. The HP has better reflection handling and an optional black frame insertion feature, but the LG has slightly better motion handling overall, with slightly clearer motion. The LG supports HDR and has much better viewing angles, as well as slightly better ergonomics.
The LG 27GL850 is a great monitor for pretty much any use. It's a great gaming monitor, with outstanding motion and extremely low input lag. It has wide viewing angles, good peak brightness, and decent reflection handling, great for office use or watching videos with a few friends. It delivers a decent HDR gaming experience, but is limited by its low native contrast and bad black uniformity.
This is a great monitor for office use. It has wide viewing angles, very good peak brightness, and decent reflection handling. It has a decent height and tilt adjustment, but it can't swivel, which might be an issue for some people.
The LG 27GL850 is a great monitor for gaming. It has outstanding low input lag, a great resolution and size, and impressive motion handling. It supports FreeSync, and is NVIDIA G-SYNC Compatible, and it has a flicker-free backlight. Unfortunately, it has mediocre ergonomics, and it doesn't look as good in a dark room.
Overall, the LG 27GL850 is a very good monitor for multimedia. It has a great resolution and size, and wide viewing angles, so it's well-suited for sharing videos with your friends. Unfortunately, like most IPS monitors, it doesn't look quite as good in a dark room, as it has a disappointing contrast ratio and bad black uniformity.
This is a good monitor for media creation. It has a great resolution and size, so you can see more of your work at once. It has great viewing angles, good peak brightness, and decent reflection handling. This monitor also has outstanding low input lag, for a responsive desktop experience, and there is very little distracting blur on-screen. Unfortunately, it doesn't look as good in a dark room, as it has bad black uniformity.
This is a decent monitor for gaming in HDR, mainly due to the great gaming performance. It has low input lag and impressive motion handling, so fast-moving objects are extremely clear, with almost no blur behind them. It can display a wide color gamut in HDR, but unfortunately, it can't get very bright.