Your browser is not supported or outdated so some features of the site might not be available.
Black Friday deal: The MSI Optix MAG274QRF-QD has dropped by $70 on Amazon.com. See all Monitor deals.

LG 48GQ900-B Monitor Review

Tested using Methodology v1.2
Reviewed Oct 12, 2022 at 10:31 am
LG 48GQ900-B Picture
8.3
Mixed Usage
6.9
Office
9.1
Gaming
8.9
Media Consumption
8.1
Media Creation
8.9
HDR
Black Friday Deal: The LG 48GQ900-B has dropped in price on amazon.com. See all Black Friday monitor Deals
Size
48"
Pixel Type
OLED
Max Refresh Rate
138 Hz
Variable Refresh Rate
Yes
Native Resolution
3840 x 2160
HDR10
Yes

The LG 48GQ900-B is a large 48-inch monitor with an OLED panel that delivers a similar viewing experience to LG's smaller OLED TVs, like the LG 42 C2 OLED, but with features more typically found on monitors. It has many of the same gaming features you'll find on both high-end TVs and premium gaming monitors, like HDMI 2.1 bandwidth and variable refresh rate (VRR) support. However, unlike LG's OLED TVs, it lacks a built-in smart interface but comes with a DisplayPort input and a built-in USB hub. Like the Gigabyte AORUS FO48U and the ASUS ROG Swift PG42UQ, it's designed for players who want to enjoy the incredible picture quality that OLED TVs provide but want something that more closely resembles a monitor than a TV.

Our Verdict

8.3 Mixed Usage

The LG 48GQ900-B is a great monitor for most uses. It delivers a superb gaming experience thanks to its nearly instantaneous response time and fast refresh rate, delivering smooth, clear motion with no noticeable motion blur. It's also an amazing monitor for watching videos or for content creators, especially in a dark room thanks to its near-infinite contrast ratio, delivering deep inky blacks with no blooming around bright objects. It also helps it deliver an amazing HDR experience, even though it can't get very bright. Finally, although it's an okay monitor for office use overall, it's a bit limited by its low peak brightness and just okay text clarity, so it's not a good choice for full-time office users, especially for text processing.

Pros
  • Image is consistent at the sides when sitting up close.
  • Large 48-inch screen.
  • Superb reflection handling.
Cons
  • Not bright enough to overcome glare.
  • Brightness fluctuates with different scenes.
  • RWBG layout results in just decent text clarity; can be improved with scaling.
6.9 Office

The LG 48GQ900-B is an okay monitor for office use. The large screen is great for multitasking, as you can comfortably work with multiple windows open. It also has very wide viewing angles, ensuring the sides of the screen remain uniform when you're sitting up close. It has just okay text clarity, as the RWBG subpixel layout isn't supported by most Windows programs. Unfortunately, despite its superb reflection handling, it can't handle lots of natural light, as it has disappointing peak brightness.

Pros
  • Image is consistent at the sides when sitting up close.
  • Large 48-inch screen.
  • Superb reflection handling.
Cons
  • Not bright enough to overcome glare.
  • Brightness fluctuates with different scenes.
  • RWBG layout results in just decent text clarity; can be improved with scaling.
9.1 Gaming

The LG 48GQ900-B delivers a superb gaming experience. Its nearly instantaneous response time and fast refresh rate results in crystal-clear motion, with almost no noticeable blur behind fast-moving objects. It also has very low input lag, so your actions are in-sync with the action on screen. It also has a good selection of gaming features, including HDMI 2.1 bandwidth for 4k @ 120Hz gaming from the Xbox Series S|X or the PS5, and it supports FreeSync and G-SYNC variable refresh rates to reduce screen tearing.

Pros
  • Near-infinite contrast ratio for deep blacks and bright highlights.
  • Very little motion blur or ghosting.
  • HDMI 2.1 bandwidth for 4k @ 120Hz gaming from consoles.
  • Low input lag for a responsive gaming experience.
Cons
  • Brightness fluctuates with different scenes.
8.9 Media Consumption

The LG 48GQ900-B is an amazing monitor for watching videos. It looks exceptionally good in a dark room thanks to its near-infinite contrast ratio and perfect black uniformity, resulting in deep inky blacks with no blooming around bright objects. The large screen and wide viewing angles are great for watching with a group of friends, as the image remains consistent when viewed from an angle. It also has a fantastic SDR color gamut and good accuracy out of the box, so your favorite shows look how they're supposed to look.

Pros
  • Perfect black uniformity with no blooming around bright highlights.
  • Near-infinite contrast ratio for deep blacks and bright highlights.
  • Image is consistent at the sides when sitting up close.
  • Large 48-inch screen.
  • Superb reflection handling.
Cons
  • Not bright enough to overcome glare.
  • Brightness fluctuates with different scenes.
8.1 Media Creation

The LG 48GQ900-B is great for media creators. The large screen makes it easy to see more of your workflow at once, and it has a wide horizontal and vertical viewing angle, meaning you can share your screen with someone else, and they'll still see the same thing you see. It has a fantastic SDR color gamut and a remarkably wide color gamut in HDR, as well as superb gradient handling, so you don't have to worry about banding or loss of fine details. On the other hand, due to its large size, it has no ergonomic adjustments at all, so it's hard to place it in an ideal viewing position.

Pros
  • Perfect black uniformity with no blooming around bright highlights.
  • Near-infinite contrast ratio for deep blacks and bright highlights.
  • Image is consistent at the sides when sitting up close.
  • Large 48-inch screen.
  • Superb reflection handling.
Cons
  • Brightness fluctuates with different scenes.
  • RWBG layout results in just decent text clarity; can be improved with scaling.
8.9 HDR

The LG 48GQ900-B delivers an amazing HDR experience. The OLED panel has a near-infinite contrast ratio without the need for a local dimming feature, so even though it has just okay peak brightness in HDR, bright highlights still stand out incredibly well with no distracting blooming in dark scenes. It has a remarkable HDR color gamut, so HDR movies and games look vivid and lifelike. Finally, it has superb gradient handling, ensuring there's very little banding in areas of similar color, like sky scenes.

Pros
  • Perfect black uniformity with no blooming around bright highlights.
  • Near-infinite contrast ratio for deep blacks and bright highlights.
  • Remarkably wide color gamut.
Cons
  • Just okay HDR peak brightness.
  • Brightness fluctuates with different scenes.
  • 8.3 Mixed Usage
  • 6.9 Office
  • 9.1 Gaming
  • 8.9 Media Consumption
  • 8.1 Media Creation
  • 8.9 HDR
  1. Updated Oct 27, 2022: Compared the HDR Brightness to the ASUS ROG Swift OLED PG42UQ.
  2. Updated Oct 12, 2022: Review published.
  3. Updated Oct 07, 2022: Early access published.

Differences Between Sizes And Variants

We tested the 48-inch LG 48GQ900-B monitor, which is part of LG's UltraGear gaming lineup. There are no other sizes or variants similar to this one.

Model Size Panel Type Resolution Max Refresh Rate
48GQ900-B 48" OLED 3840 x 2160 138Hz

Our unit was manufactured in May 2022; you can see the label here.

Compared To Other Monitors

The LG 48GQ900-B delivers fantastic picture quality thanks to its OLED panel, so it delivers better visuals than most gaming monitors. It's mainly designed to offer a true monitor experience for users who want to enjoy the excellent picture quality of the 48-inch LG C2 OLED and the Sony A90K OLED, but without the smart features. Sadly, it's also significantly more expensive than the competition, so unless you need DisplayPort inputs, you're better off getting one of the smaller OLED TVs.

See our picks for the best 4k monitors, the best multimedia monitors, and the best gaming monitors.

LG 42 C2 OLED

The LG 42 C2 OLED and the LG 48GQ900-B offer nearly identical picture quality, but they have different inputs and different extra features. The 42 C2 OLED is a TV we've tested as a monitor, so it has features you'd typically find on a TV, including extra image processing options, a fully-featured smart interface, and a tuner. The 48GQ900-B, on the other hand, is designed to be used as a monitor, so it lacks a smart interface and advanced picture processing options. However, it has inputs more typically found on a monitor, including a DisplayPort input and a USB hub.

ASUS ROG Swift OLED PG42UQ

The ASUS ROG Swift OLED PG42UQ and the LG 48GQ900-B are both OLED monitors with different screen sizes and have many similarities. One big difference is that the ASUS looks worse in HDR as colors are washed out, but that should be fixed with a firmware update.

Gigabyte AORUS FO48U OLED

The Gigabyte AORUS FO48U OLED and the LG 48GQ900-B offer nearly identical performance, but the Gigabyte is slightly better overall. The Gigabyte is a bit brighter in SDR, meaning it can handle a bit more glare in a bright room. The Gigabyte also has a few extra features, including USB-C connectivity, to make it easier to connect your MacBook or your Ultrabook.

LG 48 C1 OLED

The LG 48 C1 OLED and the LG 48GQ900-B perform nearly identically, but they have different inputs and different extra features. The 48 C1 OLED is a TV that we've tested as a monitor, meaning it has features you'd typically find on a TV, including advanced image and motion processing options, a fully-featured smart interface, and a tuner. The 48GQ900-B, on the other hand, is designed to be used as a monitor, so it lacks a smart interface and advanced picture processing options. However, it has inputs more typically found on a monitor, including a DisplayPort input and a USB hub.

Sony 42 A90K OLED

The Sony 42 A90K OLED and the LG 48GQ900-B offer nearly identical picture quality, but they have different inputs and different extra features. The 42 A90K OLED is a TV we've tested as a monitor, so it has features you'd typically find on a TV, including extra image processing options, a fully-featured smart interface, and a tuner. The 48GQ900-B, on the other hand, is designed to be used as a monitor, so it lacks a smart interface and advanced picture processing options. However, it has inputs more typically found on a monitor, including a DisplayPort input and a USB hub.

+ Show more

Test Results

perceptual testing image
Design
Design
Style
Curved
No
Curve Radius
Not Curved

The LG 48GQ900-B has a very simple, understated design that looks great. It has thin bezels on all four sides, so they're not distracting when gaming or watching videos. There's very little gamer aesthetic to it, but there are bands of RGB lighting on the back.

8.5
Design
Build Quality

The LG 48GQ900-B has excellent build quality. It feels premium and well-built overall, with a nice sturdy stand that feels strong. The stand supports the monitor extremely well, allowing for very little wobble even if you nudge the desk or table it's on. There's a slight gap between the back side bezel and the back of the display, and dust could collect there over time. The back panel doesn't feel as well-built as the rest, though, as it's made of plastic and feels cheaper.

0
Design
Ergonomics
Height Adjustment
0.0" (0.0 cm)
Tilt Range
No Tilt
Rotate Portrait/Landscape
No
Swivel Range
No swivel
Wall Mount
VESA 300x200

Unfortunately, like most monitors or TVs this size, there are no ergonomic adjustments on the stand, so it can be hard to place it in an ideal viewing position. There's a track through the back of the stand that can be used for cable management.

Design
Stand
Base Width
21.1" (53.7 cm)
Base Depth
7.5" (19.1 cm)
Thickness (With Display)
4.3" (11.0 cm)
Weight (With Display)
36.6 lbs (16.6 kg)

The stand is slim and takes up very little space.

Design
Display
Size
48"
Housing Width
42.2" (107.1 cm)
Housing Height
24.6" (62.5 cm)
Thickness (Without Stand)
1.9" (4.9 cm)
Weight (Without Stand)
33.7 lbs (15.3 kg)
Borders Size (Bezels)
0.4" (0.9 cm)
Design
Controls

You can use the included remote to quickly change settings and picture modes or adjust the volume.

Design
In The Box
Power Supply
Internal

  • Remote control
  • HDMI cable
  • DisplayPort cable
  • USB-B upstream cable
  • User guides

Picture Quality
10
Picture Quality
Contrast
Native Contrast
Inf : 1
Contrast With Local Dimming
N/A

The LG 48GQ900-B has a near-infinite contrast ratio with perfect black levels in dark rooms, even when they're right next to bright highlights. It makes it a fantastic choice for watching in a dark room, as blacks are inky and deep.

10
Picture Quality
Local Dimming
Local Dimming
No
Backlight
No Backlight

The LG 48GQ900-B doesn't have a backlight, but thanks to its near-infinite contrast ratio, it's equivalent to a perfect local dimming feature. We still film these videos on the TV, so you can see how it performs and compare it with a TV with local dimming.

5.8
Picture Quality
SDR Brightness
Real Scene
188 cd/m²
Peak 2% Window
189 cd/m²
Peak 10% Window
192 cd/m²
Peak 25% Window
193 cd/m²
Peak 50% Window
190 cd/m²
Peak 100% Window
135 cd/m²
Sustained 2% Window
180 cd/m²
Sustained 10% Window
184 cd/m²
Sustained 25% Window
185 cd/m²
Sustained 50% Window
182 cd/m²
Sustained 100% Window
129 cd/m²
ABL
0.025
Minimum Brightness
12 cd/m²

The LG 48GQ900-B has disappointing peak brightness in SDR. Unlike most OLED monitors or TVs, there's very little variation in peak brightness between scenes. It's because the monitor's peak brightness in SDR is so low that it doesn't trigger the Automatic Brightness Limiter (ABL) except with really large bright scenes. Similar OLED TVs get much brighter in SDR, but this trigger's the display's ABL, causing a noticeable variation in brightness with different scenes.

These results are from after calibration with the 'Gamer 1' Picture Mode and Brightness at its max.

6.5
Picture Quality
HDR Brightness
VESA DisplayHDR Certification
No Certification
Real Scene
399 cd/m²
Peak 2% Window
609 cd/m²
Peak 10% Window
621 cd/m²
Peak 25% Window
394 cd/m²
Peak 50% Window
241 cd/m²
Peak 100% Window
127 cd/m²
Sustained 2% Window
578 cd/m²
Sustained 10% Window
594 cd/m²
Sustained 25% Window
373 cd/m²
Sustained 50% Window
230 cd/m²
Sustained 100% Window
123 cd/m²
ABL
0.100

The LG 48GQ900-B has just okay HDR peak brightness. Small highlights are bright enough to stand out well, but it gets dimmer with larger bright areas due to the aggressive Automatic Brightness Limiter (ABL). The brightness tracks the EOTF extremely well, as almost all scenes display at the correct brightness level. There's a very smooth roll-off as the brightness approaches the monitor's peak, preserving fine details in bright scenes. If you want an OLED monitor that gets much brighter in HDR, check out the ASUS ROG Swift OLED PG42UQ.

These measurements are in the 'Vivid' Picture Mode with Brightness at 'Max'.

8.7
Picture Quality
Horizontal Viewing Angle
Color Washout From Left
49°
Color Washout From Right
51°
Color Shift From Left
35°
Color Shift From Right
34°
Brightness Loss From Left
63°
Brightness Loss From Right
62°
Black Level Raise From Left
70°
Black Level Raise From Right
70°
Gamma Shift From Left
65°
Gamma Shift From Right
62°

The LG 48GQ900-B has an excellent horizontal viewing angle. There's some slight color shift at a moderate angle, which is noticeable if you're sitting close to the screen, as the sides of the screen appear slightly different from the center. It's also good if you like sharing the screen with other people, as the image remains consistent when viewed from the sides.

9.0
Picture Quality
Vertical Viewing Angle
Color Washout From Below
56°
Color Washout From Above
53°
Color Shift From Below
36°
Color Shift From Above
33°
Brightness Loss From Below
69°
Brightness Loss From Above
68°
Black Level Raise From Below
70°
Black Level Raise From Above
70°
Gamma Shift From Below
67°
Gamma Shift From Above
66°

The LG 48GQ900-B has a fantastic vertical viewing angle. The top and bottom of the screen remain uniform even if you're sitting up close.

8.1
Picture Quality
Gray Uniformity
50% Std. Dev.
3.041%
50% DSE
0.133%

The LG 48GQ900-B has great gray uniformity. There's very little dirty screen effect, ensuring that large areas of uniform color, like most web pages or if you're watching sports, look clean. There's a bit of vignetting, as the corners specifically appear a bit darker than the center, but it's not very noticeable with real content.

10
Picture Quality
Black Uniformity
Native Std. Dev.
0.211%
Std. Dev. w/ L.D.
N/A

Thanks to its OLED panel, the LG 48GQ900-B has perfect black uniformity, as any pixel that's displaying black is turned off. It results in a perfectly uniform image with no blooming around bright highlights.

7.6
Picture Quality
Color Accuracy (Pre-Calibration)
Picture Mode
sRGB
sRGB Gamut Area xy
108.8%
White Balance dE (Avg.)
3.31
Color Temperature (Avg.)
6,581 K
Gamma (Avg.)
2.24
Color dE (Avg.)
2.89
Contrast Setting
N/A
RGB Settings
50-50-50
Gamma Setting
Default
Brightness Setting
90
Measured Brightness
227 cd/m²
Brightness Locked
No

The LG 48GQ900-B has very good accuracy before calibration. The white balance is decent, with just a few minor issues in brighter shades of gray. The overall color accuracy is good, but even though it has an sRGB mode, colors are oversaturated a bit. Like most monitors, the sRGB mode locks you out of most picture settings, but you can still adjust the R/G/B balance. Gamma doesn't follow the sRGB curve properly; instead, it stays close to a flat 2.2 gamma, so dark scenes are a bit over-brightened in SDR. Finally, the color temperature is very close to the target, so whites look pure.

9.4
Picture Quality
Color Accuracy (Post-Calibration)
Picture Mode
Gamer 1
sRGB Gamut Area xy
101.9%
White Balance dE (Avg.)
0.84
Color Temperature (Avg.)
6,526 K
Gamma (Avg.)
2.19
Color dE (Avg.)
1.05
Contrast Setting
60
RGB Settings
50-50-50
Gamma Setting
Mode 2
Brightness Setting
45
Measured Brightness
100 cd/m²
ICC Profile
Download

After calibration, the LG 48GQ900-B has superb accuracy. Any remaining issues with the white balance and gamma aren't noticeable. Some colors are still a bit off, but it's not noticeable. It's compatible with LG's Calibration Studio software, which allows you to load an ICC profile to the monitor itself and use it with any source. It's great for console gamers who still want to enjoy an accurate, fully calibrated image.

9.6
Picture Quality
SDR Color Gamut
sRGB Coverage xy
100.0%
sRGB Picture Mode
Gamer 1
Adobe RGB Coverage xy
88.2%
Adobe RGB Picture Mode
Gamer 1

The LG 48GQ900-B has a fantastic SDR color gamut. It can display the entire sRGB color space used by most desktop and web content, including most games. It also has great coverage of the wider Adobe RGB color space. However, it can't display the full range of green or cyan.

9.9
Picture Quality
SDR Color Volume
sRGB In ICtCp
100.0%
sRGB Picture Mode
Gamer 1
Adobe RGB In ICtCp
94.7%
Adobe RGB Picture Mode
Gamer 1

The LG 48GQ900-B has incredible color volume in SDR. Thanks to its near-infinite contrast ratio, it displays dark, saturated colors well.

9.3
Picture Quality
HDR Color Gamut
Wide Color Gamut
Yes
DCI-P3 Coverage xy
98.5%
DCI-P3 Picture Mode
Vivid
Rec. 2020 Coverage xy
71.2%
Rec. 2020 Picture Mode
Vivid

The LG 48GQ900-B has a remarkably wide color gamut in HDR. It can display almost all of the DCI-P3 color space, which is the most widely used color space in HDR, especially with live-action content. It has sub-par coverage of the wider Rec. 2020 color space, which is used more often with animated content, so there's some loss of fine details with that. Unfortunately, the color temperature is very cold in all HDR picture modes, and there's no option to correct it.

7.7
Picture Quality
HDR Color Volume
DCI-P3 In ICtCp
79.0%
DCI-P3 Picture Mode
Vivid
Rec. 2020 In ICtCp
62.2%
Rec. 2020 Picture Mode
Vivid

The LG 48GQ900-B has good color volume in HDR. Unlike the QD-OLED technology used on the Dell Alienware AW3423DW, the W-OLED panel used on this monitor can't display colors as bright as pure white, resulting in worse overall color volume.

9.3
Picture Quality
Reflections
Screen Finish
Matte
Total Reflections
1.7%
Indirect Reflections
1.1%
Calculated Direct Reflections
0.5%

The LG 48GQ900-B has superb reflection handling. The matte anti-reflective coating significantly reduces the intensity of direct reflections, so they're much less distracting than they are on the Sony 42 A90K OLED. This coating also adds a slight haze to the screen, reducing the overall sharpness.

6.5
Picture Quality
Text Clarity
Pixel Type
OLED
Subpixel Layout
RWBG

The LG 48GQ900-B has just okay text clarity. The pixel density is lower than most typical monitors, and the RWBG subpixel layout isn't supported by most programs, so there are more issues with text aliasing. Unfortunately, the matte anti-reflective coating adds a bit of haze to the screen, reducing the clarity a bit, so it's slightly worse than the LG 42 C2 OLED.

Windows suggests 300% scaling, which is just too large for most people, so the photos above are with 100% scaling. Enabling ClearType (top photo) helps improve the boldness of the letters, but it's still not ideal. Using a higher scaling factor helps a bit, so it takes a bit of trial and error to find the right settings for you.

9.1
Picture Quality
Gradient
Color Depth
10 Bit

The LG 48GQ900-B has superb gradient handling. There's some noticeable banding, though, especially in darker shades of gray, and unlike the LG TVs, there are no processing features to reduce banding.

Motion
8.2
Motion
Refresh Rate
Native Refresh Rate
120 Hz
Max Refresh Rate
138 Hz
Max Refresh Rate Over DP
138 Hz
Max Refresh Rate Over HDMI
138 Hz
Max Refresh Rate Over DP @ 10-bit
138 Hz
Max Refresh Rate Over HDMI @ 10-Bit
138 Hz

The LG 48GQ900-B has a slightly faster refresh rate than most 48-inch OLED TVs that we've tested as a monitor. Thanks to the inclusion of DisplayPort, it also supports the maximum refresh rate over either connection.

Motion
Variable Refresh Rate (VRR)
FreeSync
Yes
G-SYNC
Compatible (NVIDIA Certified)
VRR Maximum
138 Hz
VRR Minimum
< 20 Hz
VRR Supported Connectors
DisplayPort, HDMI
Variable Refresh Rate
Yes

The LG 48GQ900-B supports multiple variable refresh rate (VRR) formats, ensuring you'll enjoy a smooth, nearly tear-free gaming experience from any source that supports VRR. It includes all recent PC graphics cards, as well as the Xbox Series S|X or the PS5. It supports low framerate compensation, ensuring a smooth experience even when the frame rate drops really low with most sources. It doesn't work perfectly with all sources, though, as there's screen tearing above 120Hz when you're connected via HDMI to a recent NVIDIA graphics card.

9.9
Motion
Response Time @ Max Refresh Rate
Recommended Overdrive Setting
No Overdrive
Rise / Fall Time
≈ 0.3 ms
Total Response Time
≈ 1.7 ms
Overshoot Error
≈ 0.6%
Worst 3 Rise / Fall Time
≈ 0.4 ms
Worst 3 Total Response Time
≈ 8.3 ms
Worst 3 Overshoot Error
≈ 4.1%

Sample Size (ms)Response Time ChartResponse Time TablesMotion Blur Photo
50ChartTablePhoto
150ChartTablePhoto
300ChartTablePhoto

The LG 48GQ900-B has a near-instant response time at its max refresh rate of 138Hz, resulting in incredibly clear motion. Unlike most monitors, there are no overdrive settings that allow you to fine-tune the motion handling.

Note: When we measured the response times of this monitor, we encountered some strange results. The initial transition is near-instantaneous, but it appears to overshoot the target a bit and then very slowly stabilize down. It's actually due to the monitor's automatic brightness limiter and not part of the actual transitions. With real content, this monitor looks nearly identical to the LG 42 C2 OLED and the Gigabyte AORUS FO48U.

Given that this issue is only noticeable with very specific test patterns, we took the exceptional decision to use the 120 Hz values from the LG 48 C1 OLED, as our measured results don't accurately reflect the real-world user experience, and we don't have accurate results from any other 138Hz OLED display. The C1 uses a very similar, if not identical panel; visually, the two perform the same. The tables and graphs shown here are the actual values measured on the 48GQ900-B, following our normal methodology, including waiting for each transition to get within 2% of the final value.

9.9
Motion
Response Time @ 120Hz
Recommended Overdrive Setting
No Overdrive
Rise / Fall Time
≈ 0.3 ms
Total Response Time
≈ 1.7 ms
Overshoot Error
≈ 0.6%
Worst 3 Rise / Fall Time
≈ 0.4 ms
Worst 3 Total Response Time
≈ 8.3 ms
Worst 3 Overshoot Error
≈ 4.1%

Sample Size (ms)Response Time ChartResponse Time TablesMotion Blur Photo
50ChartTablePhoto
150ChartTablePhoto
300ChartTablePhoto

The response time is nearly as good at 120Hz as it is at the max refresh rate. Unlike most monitors, there are no overdrive settings that allow you to fine-tune the motion handling. Again, the charts and graphs shown here are the actual measurements taken from the LG 48GQ900-B, but the posted numbers are from the LG 48 C1 OLED.

9.7
Motion
Response Time @ 60Hz
Recommended Overdrive Setting
No Overdrive
Rise / Fall Time
≈ 0.3 ms
Total Response Time
≈ 3.1 ms
Overshoot Error
≈ 0.8%
Worst 3 Rise / Fall Time
≈ 0.4 ms
Worst 3 Total Response Time
≈ 16.6 ms
Worst 3 Overshoot Error
≈ 6.1%

Overdrive SettingResponse Time ChartResponse Time TablesMotion Blur Photo
50ChartTablePhoto
150ChartTablePhoto
300ChartTablePhoto

The response time at 60Hz is still fantastic. There's a bit more noticeable blur at 60Hz; this is persistence blur caused by the monitor's incredibly fast response time. Unlike most monitors, there are no overdrive settings that allow you to fine-tune the motion handling. Again, the charts and graphs shown here are the actual measurements taken from the LG 48GQ900-B, but the posted numbers are from the LG 48 C1 OLED.

Motion
Backlight Strobing (BFI)
Backlight Strobing (BFI)
No BFI
Maximum Frequency
N/A
Minimum Frequency
N/A
Longest Pulse Width Brightness
N/A
Shortest Pulse Width Brightness
N/A
Pulse Width Control
No BFI
Pulse Phase Control
No BFI
Pulse Amplitude Control
No BFI
VRR At The Same Time
No BFI

Unfortunately, there's no optional black frame insertion or backlight strobing feature to improve the appearance of motion.

10
Motion
Image Flicker
Flicker-Free
No
PWM Dimming Frequency
0 Hz

The LG 48GQ900-B isn't technically flicker-free, but it doesn't use pulse-width modulation (PWM) to adjust the display's brightness. There's a small dip in brightness that corresponds to the display's refresh rate; however, it isn't noticeable.

Inputs
8.8
Inputs
Input Lag
Native Resolution @ Max Hz
4.3 ms
Native Resolution @ 120Hz
4.9 ms
Native Resolution @ 60Hz
9.1 ms
Backlight Strobing (BFI)
N/A

The LG 48GQ900-B has very low input lag, ensuring a very responsive gaming experience.

8.7
Inputs
Resolution And Size
Native Resolution
3840 x 2160
Aspect Ratio
16:9
Megapixels
8.3 MP
Pixel Density
93 PPI
Measured Screen Diagonal
47.6"
Screen Area
968 in²
10
Inputs
PS5 Compatibility
4k @ 120Hz
Yes
4k @ 60Hz
Yes
1440p @ 120Hz
Yes
1440p @ 60Hz
Yes
1080p @ 120Hz
Yes
1080p @ 60Hz
Yes
HDR
Yes
VRR
Yes

The LG 48GQ900-B can take full advantage of the PS5. Everything works well, with no issues with any of the features. Note that the variable refresh rate feature doesn't work at 1440p, but this is a limitation of the PS5, not the display.

10
Inputs
Xbox Series X|S Compatibility
4k @ 120Hz
Yes
4k @ 60Hz
Yes
1440p @ 120Hz
Yes
1440p @ 60Hz
Yes
1080p @ 120Hz
Yes
1080p @ 60Hz
Yes
HDR
Yes
VRR
Yes

The LG 48GQ900-B can nearly take full advantage of the Xbox Series S|X. It supports the full range of refresh rates and resolutions supported by the Xbox, but like most monitors, it doesn't support Dolby Vision video playback or Dolby Vision gaming.

Inputs
Inputs Photos
Inputs
Video And Audio Ports
DisplayPort
1 (DP 1.4)
Mini DisplayPort
No
HDMI
3 (HDMI 2.1)
HDMI 2.1 Rated Speed
48Gbps (FRL 12x4)
DVI
No
VGA
No
Daisy Chaining
No
3.5mm Audio Out
1
3.5mm Audio In
No
HDR10
Yes
3.5mm Microphone In
No
Inputs
USB
USB-A Ports
2
USB-A Rated Speed
5Gbps (USB 3.2 Gen 1)
USB-B Upstream Port
Yes
USB-C Ports
0
USB-C Upstream
No USB-C Ports
USB-C Rated Speed
No USB-C Ports
USB-C Power Delivery
No USB-C Ports
USB-C DisplayPort Alt Mode
No USB-C Ports
Thunderbolt
No

Sadly, there's no USB-C, so you'll need an adapter to connect a MacBook or Ultrabook.

Inputs
macOS Compatibility

The LG 48GQ900-B works well with most recent Macs. There's a bit of flicker on the desktop and in some games, but it's not noticeable. The variable refresh rate feature works properly, as does HDR. Windows return to their original positions when you wake your computer from sleep, but not if you close the lid.

Features
Features
Additional Features
Speakers
Yes
RGB Illumination
Presets
Multiple Input Display
No
KVM Switch
No

There are a few additional features on the LG 48GQ900-B. Like most gaming monitors, there are a few virtual overlays available for things like frame counters or a virtual crosshair. It's also compatible with LG's Calibration Studio software, which allows you to load an ICC profile directly to the monitor and enjoy a calibrated image with any source.

Features
On-Screen Display (OSD)

Discussions