LG 27GN750-B Monitor Review

Tested using Methodology v1.1
Reviewed Jun 08, 2020 at 08:47 am
LG 27GN750-B Picture
7.7
Mixed Usage
7.6
Office
8.3
Gaming
7.6
Multimedia
7.6
Media Creation
6.9
HDR Gaming
Size 27"
Resolution 1920x1080
Max Refresh Rate
240 Hz
LCD Type
IPS
Variable Refresh Rate
FreeSync

The LG 27GN750-B is a 240Hz monitor in LG's UltraGear lineup. It has a 1080p, IPS panel with native FreeSync support, and it's certified by NVIDIA for G-SYNC compatibility too. Motion looks exceptionally clear on this monitor due to its outstanding response time both at its max refresh rate and at 60Hz. The input lag is extremely low, so your actions are registered quickly when gaming. With its IPS panel, it has wide viewing angles, but it has a low contrast ratio, so it's not an ideal choice for dark room viewing. Unfortunately, even though it supports HDR10, it can't display a wide color gamut, so HDR content doesn't look much different from SDR content. This monitor can get bright enough to combat glare and it has good reflection handling, so you shouldn't have any issues placing it in a bright room.

Our Verdict

7.7 Mixed Usage

The LG 27GN750-B is a good monitor for most uses, and it performs best as a gaming monitor. Gamers should appreciate the high refresh rate, outstanding motion handling, extremely low input lag, and FreeSync VRR support. It has wide viewing angles, which makes sharing your screen with coworkers or friends easier, and it performs well in bright environments because of its very good reflection handling. Unfortunately, HDR content on this monitor isn't much different than SDR content since it can't display a wide color gamut or get bright enough to bring out highlights.

Pros
  • Really high refresh rate.
  • Outstanding response time results in clear motion.
  • Extremely low input lag.
Cons
  • Can't display a wide color gamut for HDR content.
  • Low contrast ratio.
7.6 Office

The LG 27GN750-B is a good office monitor. It has wide viewing angles if you need to share your screen with others, it can get bright enough to combat glare, and it has very good reflection handling. Unfortunately, the 1080p resolution might be too limiting for some, but luckily it has excellent gray uniformity, so solid colors across the screen, like on a web page, look great.

Pros
  • Wide viewing angles.
  • Gets bright enough to combat glare.
Cons
  • Low resolution.
  • Disappointing ergonomics.
8.3 Gaming

Impressive gaming monitor. The LG 27GN750-B has a very high 240Hz refresh rate that produces very smooth motion, it supports FreeSync VRR and it's G-SYNC compatible, and the input lag is extremely low. The response time at 60Hz is also amazing, so it's a great choice for console gaming. The 1080p resolution doesn't deliver an immersive gaming experience, but it has wide viewing angles if you want to use it for co-op gaming.

Pros
  • Really high refresh rate.
  • Outstanding response time results in clear motion.
  • Extremely low input lag.
Cons
  • Low contrast ratio.
7.6 Multimedia

The LG 27GN750-B is a good choice for watching videos. The 1080p resolution is too low to watch the latest 4k videos online, but it has wide viewing angles if you want to share your screen with some friends. Unfortunately, it's not good for dark room viewing as it has a low contrast ratio and black uniformity isn't the best. However, it performs well in bright rooms as it has great peak brightness and very good reflection handling.

Pros
  • Wide viewing angles.
  • Gets bright enough to combat glare.
Cons
  • Low resolution.
  • Disappointing ergonomics.
7.6 Media Creation

The LG 27GN750-B isn't the most ideal for media creation but it's still a good choice. The 1080p resolution is too low if you're editing 4k videos and its stand doesn't allow for a wide range of adjustments. However, it gets bright enough to combat glare, and it has very good reflection if you work in a bright environment. Unfortunately, its gradient handling isn't as good as other 10-bit panels as there's visible banding.

Pros
  • Wide viewing angles.
  • Gets bright enough to combat glare.
Cons
  • Low resolution.
  • Disappointing ergonomics.
6.9 HDR Gaming

Decent for HDR gaming, mainly due to its impressive gaming performance. It has a really high 240Hz refresh rate, an outstanding response time resulting in clear motion, and an extremely low input lag. Unfortunately, HDR doesn't look good on this monitor as it doesn't display a wide color gamut and can't get bright enough to make highlights pop.

Pros
  • Really high refresh rate.
  • Outstanding response time results in clear motion.
  • Extremely low input lag.
Cons
  • Can't display a wide color gamut for HDR content.
  • Low contrast ratio.
  • 7.7 Mixed Usage
  • 7.6 Office
  • 8.3 Gaming
  • 7.6 Multimedia
  • 7.6 Media Creation
  • 6.9 HDR Gaming

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Test Results

perceptual testing image
Design
Design
Style
Curved No
Curve Radius Not Curved
Weight (without stand)
8.8 lbs (4.0 kg)
Weight (with stand)
13.0 lbs (5.9 kg)

The 27GN750-B has a simple design like most other LG UltraGear monitors. It's mainly black with a red ring on the back and it has a wide-set stand. It fits well into any gaming setup and doesn't stand out in an office environment, either.

Design
Stand
Width
18.7" (47.5 cm)
Depth
9.4" (24.0 cm)

The stand supports the monitor well but there's still some wobble. Its feet are wide and there's space to place stuff in front of the stand.

5.9
Design
Ergonomics
Height Adjustment
4.3" (11.0 cm)
Switch Portrait/Landscape Yes, Clockwise
Swivel Range No swivel
Tilt Range -15° to 5°

Disappointing ergonomics. The 27GN750 can rotate into portrait mode, but only clockwise, so the inputs that are housed on the right side are on top when it's in portrait mode. This is a bit unfortunate if you have short cables.

Design
Back
Wall Mount VESA 100x100

The red ring on the back can't be illuminated like the LG 32GK850G-B. There's a quick-release button and there's a clip on the stand for cable management.

Design
Borders
Borders
0.3" (0.8 cm)

The borders are thin and aren't distracting if used in a multi-monitor setup.

Design
Thickness
Thickness (with stand)
7.7" (19.5 cm)
Thickness (without stand)
2.1" (5.4 cm)

The screen of the 27GN750-B isn't very thick on its own, but the stand takes up a bit of space.

7.0
Design
Build Quality

The 27GN750 has decent build quality, like other UltraGear monitors. It's made entirely out of plastic but there are no obvious build quality issues.

Picture Quality
6.0
Picture Quality
Contrast
Native Contrast
1032 : 1
Contrast With Local Dimming
N/A

Sub-par contrast ratio, which is expected from an IPS panel. Blacks appear closer to gray when viewed in the dark.

0
Picture Quality
Local Dimming
Local Dimming
No
Backlight
Edge

The 27GN750 doesn't have a local dimming feature. The above video is provided for reference only.

8.0
Picture Quality
SDR Peak Brightness
SDR Real Scene
351 cd/m²
SDR Peak 2% Window
377 cd/m²
SDR Peak 10% Window
378 cd/m²
SDR Peak 25% Window
378 cd/m²
SDR Peak 50% Window
378 cd/m²
SDR Peak 100% Window
378 cd/m²
SDR Sustained 2% Window
377 cd/m²
SDR Sustained 10% Window
378 cd/m²
SDR Sustained 25% Window
378 cd/m²
SDR Sustained 50% Window
378 cd/m²
SDR Sustained 100% Window
378 cd/m²
SDR ABL
0.000

Great peak brightness. It gets bright enough to combat glare and it remains very consistent across different content. It's slightly less bright than the LG 27GL650F-B.

6.6
Picture Quality
HDR Peak Brightness
HDR Real Scene
370 cd/m²
HDR Peak 2% Window
398 cd/m²
HDR Peak 10% Window
398 cd/m²
HDR Peak 25% Window
399 cd/m²
HDR Peak 50% Window
398 cd/m²
HDR Peak 100% Window
441 cd/m²
HDR Sustained 2% Window
396 cd/m²
HDR Sustained 10% Window
397 cd/m²
HDR Sustained 25% Window
397 cd/m²
HDR Sustained 50% Window
397 cd/m²
HDR Sustained 100% Window
398 cd/m²
HDR ABL
0.000

Just okay HDR peak brightness. On 'Gamer 1' Picture Mode, it gets decently bright but not enough to make highlights pop in HDR.

8.3
Picture Quality
Horizontal Viewing Angle
Color Washout From Left
44 °
Color Washout From Right
46 °
Color Shift From Left
50 °
Color Shift From Right
51 °
Brightness Loss From Left
47 °
Brightness Loss From Right
49 °
Black Level Raise From Left
70 °
Black Level Raise From Right
70 °
Gamma Shift From Left
56 °
Gamma Shift From Right
58 °

As is the case with most IPS monitors, the 27GN750-B has a great horizontal viewing angle. The image remains accurate when viewed from the side, which is ideal for co-op gaming.

6.5
Picture Quality
Vertical Viewing Angle
Color Washout From Below
32 °
Color Washout From Above
33 °
Color Shift From Below
31 °
Color Shift From Above
34 °
Brightness Loss From Below
37 °
Brightness Loss From Above
38 °
Black Level Raise From Below
52 °
Black Level Raise From Above
28 °
Gamma Shift From Below
31 °
Gamma Shift From Above
33 °

The 27GN750 has a passable vertical viewing angle. The edges of the screen may appear darker if you sit too close and you lose some image accuracy if it's mounted above eye level. This isn't as good as the LG 34GN850-B.

8.9
Picture Quality
Gray Uniformity
50% Std. Dev.
2.616 %
50% DSE
0.099 %
5% Std. Dev.
0.288 %
5% DSE
0.040 %

Outstanding gray uniformity. The edges of the screen are a bit darker, but it shouldn't be noticeable with most content.

6.0
Picture Quality
Black Uniformity
Native Std. Dev.
1.989 %
Std. Dev. w/ L.D.
N/A

Black uniformity isn't bad for an IPS monitor. Despite the visible clouding and some backlight bleed, it's much better than the Dell Alienware AW2720HF, which is another 240Hz monitor.

6.8
Picture Quality
Pre Calibration
Picture Mode
Gamer 1
Luminance
107 cd/m²
Luminance Settings
15
Contrast Setting
70
RGB Controls
50-50-50
Gamma Setting
Mode 2
Color Temperature
6007 K
White Balance dE
3.87
Color dE
3.30
Gamma
2.16

The 27GN750 has alright out-of-the-box color accuracy. Most colors and shades of gray are inaccurate, and the color temperature is warmer than the 6500K target, giving the image a red/yellow tint. The gamma does an okay job at following the curve, but most scenes are brighter than they should be.

9.5
Picture Quality
Post Calibration
Picture Mode
Gamer 1
Luminance
99 cd/m²
Luminance Settings
14
Contrast Setting
70
RGB Controls
46-50-52
Gamma Setting
Mode 2
Color Temperature
6499 K
White Balance dE
0.55
Color dE
0.71
Gamma
2.18

Excellent color accuracy after calibration. There are almost no inaccuracies with most colors and the color temperature is at the target. However, the gamma isn't perfect and dark scenes aren't as dark as they should be.

You can download our ICC profile calibration here.

8.6
Picture Quality
SDR Color Gamut
sRGB xy
97.2 %
Adobe RGB xy
75.7 %
sRGB Picture Mode
Gamer 1
Adobe RGB Picture Mode
Gamer 1

The 27GN750-B has an excellent SDR color gamut. It covers nearly all of the sRGB color space used in most content and it has good coverage of the wider Adobe RGB color space, although it might not be enough for professional photo editors.

8.9
Picture Quality
SDR Color Volume
sRGB In ICtCp
96.0 %
Adobe RGB In ICtCp
81.1 %
sRGB Picture Mode
Gamer 1
Adobe RGB Picture Mode
Gamer 1

Excellent color volume. Due to its low contrast ratio, it can't display dark, saturated colors well.

6.6
Picture Quality
HDR Color Gamut
Wide Color Gamut
No
DCI P3 xy
75.0 %
Rec. 2020 xy
57.9 %
DCI P3 Picture Mode
Gamer 1
Rec. 2020 Picture Mode
Gamer 1

Okay HDR color gamut, but the 27GN750 can't display a wide color gamut for HDR content. Check out the ViewSonic XG270 if you want a monitor with a wide color gamut.

6.1
Picture Quality
HDR Color Volume
DCI-P3 In ICtCp
70.0 %
Rec. 2020 In ICtCp
52.1 %
DCI P3 Picture Mode
Gamer 1
Rec. 2020 Picture Mode
Gamer 1

Mediocre HDR color volume. It's limited by the lack of a wide color gamut and low contrast ratio, so it can't display most colors at a wide range of luminance levels.

10
Picture Quality
Image Retention
IR After 0 Min Recovery
0.00 %
IR After 2 Min Recovery
0.00 %
IR After 4 Min Recovery
0.00 %
IR After 6 Min Recovery
0.00 %
IR After 8 Min Recovery
0.00 %
IR After 10 Min Recovery
0.00 %

There are no signs of temporary image retention.

8.6
Picture Quality
Gradient
Color Depth
10 Bit

Excellent gradient handling, but not as good as other 10-bit panels like the LG 27GL650F-B. There's some banding in the darker shades.

9.9
Picture Quality
Color Bleed
Pixel Row Error
0.000 %
Pixel Column Error
0.021 %

The 27GN750 has some very minor vertical color bleed, but this isn't noticeable in regular content.

7.8
Picture Quality
Reflections
Screen Finish
Matte
Total Reflections
4.8 %
Indirect Reflections
2.9 %
Calculated Direct Reflections
1.9 %

The 27GN750-B has very good reflection handling. The matte finish diffuses moderate amounts of light really well. In rooms with direct sunlight, the reflections might be distracting to some.

7.0
Picture Quality
Text Clarity
Sub-Pixel Layout
RGB

Decent text clarity. The diagonal lines on the letters R and N are clearer when enabling ClearType (top photo).

Motion
9.5
Motion
Response Time @ Max Refresh Rate
Best Overdrive Setting
Fast
Rise / Fall Time
3.9 ms
Total Response Time
7.8 ms
Overshoot Error
0.9 %
Dark Rise / Fall Time
4.0 ms
Dark Total Response Time
8.4 ms
Dark Overshoot Error
0.0 %

Overdrive Setting Response Time Chart Response Time Tables Motion Blur Photo
Off Chart Table Photo
Normal Chart Table Photo
Fast Chart Table Photo
Fastest Chart Table Photo

The 27GN750-B has an outstanding response time. Motion looks really clear and the best Overdrive setting is 'Fast'. Setting it to 'Fastest' has significant overshoot and causes visible artifacts.

8.8
Motion
Response Time @ 60Hz
Best Overdrive Setting
Off
Rise / Fall Time
5.2 ms
Total Response Time
12.4 ms
Overshoot Error
0 %
Dark Rise / Fall Time
5.7 ms
Dark Total Response Time
11.7 ms
Dark Overshoot Error
0.0 %

Overdrive Setting Response Time Chart Response Time Tables Motion Blur Photo
Off Chart Table Photo
Normal Chart Table Photo
Fast Chart Table Photo
Fastest Chart Table Photo

The 27GN750 has a fantastic response time at 60Hz. There's minimal motion blur with fast-moving objects, which is great news for console gamers. It's recommended to leave the Overdrive setting to 'Off', as there's overshoot on the other settings. This is a much better response time than the Dell Alienware AW2720HF.

10
Motion
Image Flicker
Flicker-Free Yes
PWM Dimming Frequency
0 Hz

The 27GN750 has a flicker-free backlight, which helps reduce eye strain.

0
Motion
Black Frame Insertion (BFI)
Black Frame Insertion (BFI)
No BFI
BFI Maximum Frequency
N/A
BFI Minimum Frequency
N/A

Unfortunately, the 27GN750 doesn't have a black frame insertion feature to help reduce motion blur.

9.6
Motion
Refresh Rate
Native
240 Hz
Max Refresh Rate
240 Hz
Variable Refresh Rate
Yes
FreeSync
Yes
G-SYNC
Compatible (NVIDIA Certified)
VRR Maximum
240 Hz
VRR Minimum
< 20 Hz
VRR Supported Connectors DisplayPort

The 27GN750-B has an outstanding refresh rate. It supports FreeSync VRR and NVIDIA certifies it as G-SYNC compatible too, but VRR only works over a DisplayPort connection. During testing, when it was connected to a PC through HDMI, the screen flickered until it went black, and to get the image back, we had to disable Adaptive Sync from the on-screen display.

Inputs
9.6
Inputs
Input Lag
Native Resolution
2.8 ms
Native Resolution @ 60Hz
9.3 ms
Variable Refresh Rate
3.8 ms
Variable Refresh Rate @ 60Hz
11.1 ms
10 Bit HDR
9.4 ms
Black Frame Insertion (BFI)
N/A

The 27GN750 has an extremely low input lag. The input lag slightly increases with VRR enabled, but this shouldn't be a problem for most. The input lag for 10-bit HDR was measured at 60Hz because we couldn't get a proper image at 120Hz or 240Hz over an HDMI connection.

7.1
Inputs
Resolution And Size
Native Resolution 1920 x 1080
Aspect Ratio 16:9
Megapixels 2.1 MP
Pixel Density
82 PPI
Screen Diagonal 27.0 inches
Screen Area 310 sq inches

The 1080p resolution might be too low for some who want to watch videos or use it for media creation. If that's the case, check out the 1440p LG 27GL850-B.

Inputs
Inputs
Inputs
Total Inputs
DisplayPort 1 (DP 1.2)
Mini DisplayPort No
HDMI 2 (HDMI 2.0)
DVI No
VGA No
DisplayPort Out No
USB 2 (USB 3.0)
USB C No
Analog Audio Out 3.5mm 1
Microphone In 3.5mm No
Digital Optical Audio Out No
Analog Audio Out RCA No
Power Supply External Brick
Features
Features
Additional Features
RGB Illumination
No
Speakers
No
HDR10 Yes
Multiple Input Display
No

There aren't many extra features available on this monitor. You can add a virtual crosshair for FPS games and there's a 'Black Stabilizer' features that adjusts the gamma so that it's easier to spot opponents in shadows while gaming.

Features
On-Screen Display (OSD)
Features
Controls

There's a joystick underneath the 27GN750-B to control the on-screen display. Unlike the LG 27GL750F-B, the joystick is slightly off-center and not directly below the logo.

Features
In The Box

  • HDMI cable
  • DisplayPort cable
  • Cable management hook
  • USB-B cable
  • Power cable
  • Manual
  • Driver CD

Differences Between Sizes and Variants

We reviewed the 27 inch 27GN750-B, which is the only size available of this model. There are other models in LG's UltraGear lineup, some of which are listed below.

If someone comes across a different type of panel or if their 27GN850-B doesn't correspond to our review, let us know and we'll update the review. Note that some tests such as the gray uniformity may vary between individual units.

Model Size Panel Type Resolution Refresh Rate Native VRR Notes
LG 27GL650F-B 27"  IPS 1080p 144Hz FreeSync, NVIDIA Certified  
LG 27GK750F-B 27" TN 1080p 240Hz FreeSync, NVIDIA Certified  
LG 27GN750-B  27" IPS 1080p 240Hz FreeSync, NVIDIA Certified  
LG 27GL850-B 27" IPS  1440p 144Hz FreeSync, NVIDIA Certified  
LG 27GN850-B 27" IPS 1440P 144Hz FreeSync, NVIDIA Certified  
LG 27GN950-B 27" IPS 4k 144Hz FreeSync, NVIDIA Certified  
LG 32GK650F-B 32"  VA   1440p 144Hz FreeSync  
LG 32GK850G-B 32" VA 1440p 144Hz G-SYNC  
LG 34GN850-B 34"  IPS 3440x1440P  144Hz  FreeSync, NVIDIA Certified  
LG 34GK950F-B 34"  IPS  3440x1440 144Hz FreeSync  

The unit we reviewed was manufactured in March 2020, and you can see the label here.

Compared to other monitors

The LG 27GN750-B is an impressive gaming monitor, but it doesn't match up to other 240Hz monitors in terms of overall picture quality. Also see our recommendations for the best gaming monitors, the best 240Hz monitors, and best 1080p monitors.

LG 27GL850-B
SEE PRICE
Amazon.com

The LG 27GL850-B is a bit better than the LG 27GN750-B. The 27GL850-B has a 144Hz refresh rate, 1440p resolution, a wider SDR color gamut, and better gradient handling. The 27GN750-B has better contrast, a 240Hz refresh rate, and its response time is a bit better, but the response time at 60Hz is still better on the 27GL850-B.

Dell Alienware AW2720HF
SEE PRICE
Amazon.com

The LG 27GN750-B is a bit better than the Dell Alienware AW2720HF. It has a much better response time at 60Hz and it supports HDR10. The Dell has better ergonomics and it has slightly better reflection handling. 

Dell Alienware AW2521HF
Unavailable
Amazon.com

The LG 27GN750-B and the Dell Alienware AW25212HF are similar monitors overall, but the Dell is slightly better for gaming. The Dell has a better response time both at its max refresh rate and at 60Hz, it handles reflections better, and its ergonomics are better. The LG is bigger and it supports HDR10, although content in that mode doesn't look much different from SDR. 

ViewSonic Elite XG270
SEE PRICE
Amazon.com

The ViewSonic Elite XG270 is slightly better than the LG 27GN750-B. It has better ergonomics, a better response time at 60Hz and it has a black frame insertion feature. The ViewSonic also displays a wide color gamut and it has better reflection handling. Instead, the LG has a better response time at its max refresh rate, much better black uniformity, and it has a lower input lag at 60Hz. 

Acer Nitro XV273X
SEE PRICE
Amazon.com

The Acer Nitro XV273X is a better monitor than the LG 27GN750-B. It has better ergonomics, much better out-of-the-box color accuracy, better gradient handling, and it has a black frame insertion feature to help reduce motion blur. The LG has better reflection handling and it has a slightly lower input lag when playing at 60Hz. 

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