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LG 27" OLED - UltraGear 27GX790B-B
PC monitor 2.5K - 2560 x 1440 pixels - 0.2 ms (gray to gray) - 16/9 - OLED panel - 540 Hz - DisplayHDR True Black 500 - FreeSync Premium Pro/G-SYNC Compatible - HDMI/DisplayPort/USB-C - Pivot - Black
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An OLED gaming monitor for total immersion
The LG 27GX790B-B is a 27-inch gaming monitor designed to deliver an exceptional visual experience for gamers and professionals. With its 4th generation OLED panel, it combines performance, color accuracy and smoothness to meet the expectations of the most demanding users.
High image quality
The LG 27GX790B-B stands out with its QHD OLED (2560 x 1440) panel offering UL-certified true black and a maximum brightness of 1,500 nits, ideal for bright or dark environments. Thanks to Primary RGB Tandem technology, this monitor delivers deep contrast and exceptional color accuracy, with DCI-P3 99.5 % coverage. The VESA DisplayHDR True Black 500 certification ensures lifelike details, even in the darkest scenes, immersing the user in a visually captivating world.
Dual-Mode for optimal versatility
With its VESA-certified Dual-Mode, the LG 27GX790B-B lets you switch between a refresh rate of 540 Hz in QHD for detailed visuals and 720 Hz in HD for ultra-fast action. This flexibility gives players the ability to choose their preferred setup via the On-Screen Display or the LG Switch app, to suit every game genre and optimize every session.
Advanced comfort and connectivity
The LG 27GX790B-B integrates UL-verified visual comfort technologies, such as flicker and glare reduction, to help protect eye health during long sessions. Equipped with a 0.02 ms response time (GtG), it eliminates ghosting and ensures optimal responsiveness. Its connectivity includes a DisplayPort 2.1, a USB-C and two HDMI 2.1 ports, for broad compatibility with the latest consoles and gaming PCs. Finally, its ergonomic design allows tilt, swivel, pivot and height adjustments, to fit any desk setup.
Main features:
- 27-inch QHD OLED display (2560 x 1440)
- Maximum brightness of 1,500 nits and DCI-P3 99.5 % for accurate colors
- Dual-Mode : 540 Hz in QHD and 720 Hz in HD for optimal versatility
- 0.02 ms response time (GtG) for exceptional responsiveness
- Synchronization technologies : NVIDIA G-SYNC Compatible, AMD FreeSync Premium Pro and VESA AdaptiveSync
- Connectivity : DisplayPort 2.1, USB-C, 2x HDMI 2.1 and USB 3.0 ports
- Ergonomic design : tilt, swivel, pivot and height adjustment
- Certifications VESA DisplayHDR True Black 500 and ClearMR 21000
Select your criteria
General information |
Product name |
LG 27" OLED - UltraGear 27GX790B-B |
Brand |
LG | |
Model |
27GX790B-B.AEU | |
Display |
Screen size |
27 inches |
Screen format |
16:9 | |
Panel type |
IPS display | |
QD-OLED |
No | |
Max resolution |
2560 x 1440 pixels | |
High definition |
2.5K | |
Dot Pitch |
0.2292 mm | |
Brightness |
335 cd/m² | |
Contrast |
1500000 /1 | |
Response time |
1 ms | |
Angle of vision (horizontal) |
178 Degree(s) | |
Angle of vision (vertical) |
178 Degree(s) | |
Matte/anti-glare panel |
Yes | |
HDR (High Dynamique Range) |
Yes | |
HDR standards |
VESA DisplayHDR 500 True Black | |
NVIDIA G-SYNC |
Yes | |
G-SYNC |
G-SYNC compatible | |
NVIDIA Reflex |
No | |
Adaptive-Sync |
Yes | |
AMD FreeSync |
Yes | |
FreeSync |
AMD FreeSync Premium Pro | |
Flicker-Free |
Yes | |
Anti blue light |
Yes | |
Screen |
Screen type |
LED |
Range |
LG UltraGear | |
Widescreen |
Yes | |
Curved screen |
No | |
Borderless |
Yes | |
Touch screen |
No | |
Max vertical frequency |
540 Hz | |
Type of activities |
Gamer | |
Ergonomics |
Portable |
No |
Pivot |
Yes | |
Height adjustable stand |
Yes | |
Removable stand |
Yes | |
VESA mount |
100 x 100mm | |
Back tilt angle (top) |
21 Degree(s) | |
Forward tilt angle (bottom) |
5 Degree(s) | |
Articulating arm |
No | |
Connectivity |
Video inputs |
1 X USB Type C Female |
| 1 X DisplayPort Female | ||
| 2 X HDMI Female | ||
HDMI standard |
HDMI 2.1 | |
DisplayPort standard |
DisplayPort 2.1 | |
Audio outputs |
1 X Headphone (3.5mm Jack Female) | |
Additional connector(s) |
2 X USB 3.0 | |
Dock USB-C |
No | |
Multimedia |
Built-in speakers |
No |
Webcam |
No | |
TV tuner |
No | |
Physical characteristics |
Color |
Black |
Release year |
2026 | |
Width |
605.2 mm | |
Height |
397.6 mm | |
Depth |
239 mm | |
Height (without stand) |
351 mm | |
Depth (without stand) |
51.2 mm | |
Weight |
5.47 kg | |
Weight (Without stand) |
3.4 kg | |
Multi-monitor bundle |
No | |
Power supply |
Energy class |
F |
Consumption |
25 kWh/1000h | |
Standby consumption |
0.5 W | |
Internal power supply |
No | |
Specificities |
PS5 optimized |
No |
Xbox Series optimized |
No | |
Warranties |
Commercial warranty |
Seller 5 years
|
Legal warranty |
See terms & conditions
|
|
Safety Information |
Responsible person |
LG Electronics Deutschland GmbH |
Postal address |
Alfred-Herrhausen-Allee 3-5, 65760 Eschborn, Germany | |
Electronic Address |
gpsr@lge.com |
See all LG products
Product referenced on 31 Jul 2026
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