LG 26.5-inch OLED gaming monitor ULTRAGEAR-27GX790B-B QHD 540HZ MGS0000036096

Features of the LG UltraGear OLED 4th GEN 27" QHD Extreme Dual Mode 540/720 Hz Gaming Monitor
The LG UltraGear 27GX790B-B.AEU is a 4th-generation OLED EVO gaming monitor designed for players seeking a combination of high speed, image quality and low latency. Its 26.5-inch panel offers QHD resolution of 2560 x 1440 pixels, a response time of just 0,02 ms GtG and Extreme Dual Mode, which lets you enjoy up to 540 Hz in QHD or reach 720 Hz in HD. It also features NVIDIA G-SYNC and AMD FreeSync Premium Pro compatibility, DisplayHDR True Black 500, and extensive connectivity with DisplayPort 2.1, HDMI 2.1 and USB-C.
4th-generation OLED EVO with QHD resolution
4th-generation OLED EVO technology delivers deep blacks, high contrast and accurate colours so you can clearly appreciate every scene. Its QHD resolution of 2560 x 1440 pixels provides a high level of detail, while its 178° viewing angle helps maintain a consistent image from different positions.

Screen size: 26,5 inches / 67,3 cm
Resolution: 2560 x 1440 pixels QHD
Aspect ratio: 16:9
Colour depth: 1,07 billion colours
Colour: 10 bits
Viewing angle: 178° horizontal / 178° vertical
Pixel pitch: 0,2292 x 0,2292 mm
Surface treatment: Anti-Glare, Low Reflection from Front Polarizer

Extreme Dual Mode: up to 540 Hz in QHD and 720 Hz in HD
Extreme Dual Mode lets you adapt the monitor to the type of game. You can prioritise image quality and definition with QHD resolution and a refresh rate of up to 540 Hz, or increase the speed to 720 Hz in HD resolution when maximum smoothness is the priority. Its response time of just 0,02 ms GtG completes a setup specifically geared towards competitive gaming.

Maximum frequency in QHD: 540 Hz
Extreme Dual Mode: up to 720 Hz in HD
Response time: 0.02 ms GtG
VESA DSC technology
Built-in FPS counter
Dynamic Action Sync

AMD FreeSync Premium Pro and NVIDIA G-SYNC Compatible
To maintain a smooth gaming experience, the LG UltraGear features AMD FreeSync Premium Pro and NVIDIA G-SYNC compatibility. These technologies synchronize the monitor's refresh rate with the image output of compatible equipment, helping to reduce visual issues such as tearing during fast movements.

AMD FreeSync Premium Pro
NVIDIA G-SYNC Compatible
Black Stabilizer
Integrated crosshair
User-defined key
Auto Input Switch

DisplayHDR True Black 500 and wide coverage DCI-P3
The OLED panel combines a typical contrast ratio of 1,500,000:1 with DisplayHDR 500 True Black certification and typical coverage of 99.5% of the DCI-P3 color space. This combination delivers deep blacks, vivid colors and a high level of detail in both dark and bright areas.

DisplayHDR 500 True Black
Typical color gamut : DCI-P3 99,5% CIE1976
Minimum color gamut : DCI-P3 94% CIE1976
Typical contrast: 1.500.000:1
Minimum contrast: 1.200.000:1
Typical brightness: 335 cd/m²
Minimum brightness: 300 cd/m²
HDR effect and Dolby Vision compatibility

Connectivity ready for gaming devices
Its connectivity lets you integrate the monitor into PC and console setups via DisplayPort 2.1, two HDMI connections and USB-C. This makes it possible to connect different devices and take advantage of the panel's high refresh rate.

2 x HDMI
1 x DisplayPort 2.1
USB-C
USB-C with data transmission up to 2560 x 1440 at 540 Hz
USB-C with power delivery
4-pole audio input for sound and microphone

Adjustable UltraGear design with hexagonal lighting
The monitor combines an ultra-thin four-sided bezel design with the Unity Hexagon Lighting system. Its L-shaped stand is designed to make better use of available desk space and allows you to adjust the screen’s tilt, height, swivel and pivot position.

Ultra-thin bezels on all 4 sides
Unity Hexagon Lighting
Height and tilt adjustment
Vertical-axis swivel
Pivot function
OneClick stand
VESA mount: 100 x 100 mm

Additional features for gaming and everyday use
In addition to its gaming-specific features, the LG UltraGear includes tools that make it easier to configure and adapt to different uses. It features Reader Mode, smart energy saving and colour temperature adjustment, and is also suitable for hardware calibration.

Suitable for hardware calibration
Reader mode
Smart energy saving
Colour temperature adjustment
LG UltraGear Control Center
Dual controller

Dimensions, weight and power
Weighing 6,8 kg with the stand and 4,3 kg without it, this monitor can be installed on a desk or mounted on an arm or stand compatible with VESA 100 x 100 mm. It uses an external power supply via an adapter and has a typical power consumption of 25 W.

Dimensions with stand raised: 605,2 x 527,6 x 220 mm
Dimensions with stand lowered: 605,2 x 397,6 x 220 mm
Dimensions without stand: 605,2 x 351,0 x 51,2 mm
Weight with stand: 6,8 kg
Weight without stand: 4,3 kg
Packaging weight: 9,8 kg
Packaging dimensions: 790 x 182 x 496 mm
Typical power consumption : 25 W
Maximum consumption : 46,32 W
Standby power consumption: less than 0,5 W
Power consumption when off: less than 0,3 W
AC input: 100-240 V, 50/60 Hz
Output CC: 19 V, 5,0 A
External power supply via mains adapter

Accessories and other specifications
The LG UltraGear 27GX790B-B.AEU, 2026 model, includes the accessories needed to make installation and desk organisation easier, including an HDMI cable, power adapter, cable holder and mouse holder.

MODEL: 27GX790B-B.AEU
YEAR: 2026
Adapter included
1,8 m black HDMI cable
1,5 m black power cable
Cable holder included
Mouse holder included
CE certification
UL certification (cUL)
KC certification
Volume (m ³): 0.0688