Key Features
Readers' Choice best monitor lineup forgamers and those demanding high-qualityperformance
UltraGear™ OLED GX7 Logo image.
Images have been simulated to enhance feature understanding, and may differ from actual use experience.
Introducing LG’s gaming monitor powered by 4th Gen OLED with revolutionary Primary RGB Tandem technology—reaching up to 1500 nits of peak brightness for visibly clearer gameplay*, helping you to see on-screen visuals with clarity even in bright environments. In fast-paced or sunlit in-game scenes, enhanced APL and reduced ABL help maintain consistent luminance without dimming critical visuals. With UL Verified Perfect Black, Colour and VESA DisplayHDR™ True Black 500, this next-gen OLED delivers the contrast and clarity gamers need to react faster, see more, and stay immersed in every frame.
Images have been simulated to enhance feature understanding, and may differ from actual use experience.
*As of November 2025, among all LG models using WOLED prior to 4th Gen. OLED, 27GX790B offers the highest brightness.
Powered by 4th Gen Primary RGB Tandem OLED, the 27GX790B delivers brighter* visuals with less power than the previous 3rd Gen OLEDs—reaching up to 1500 nits of peak brightness. Its advanced 4-stack RGB structure produces deeper contrast, sharper detail, and stunning color precision. Experience clearer shadows, deep immersion, and visual consistency in every frame—built for serious gaming.
Images have been simulated to enhance feature understanding, and may differ from actual use experience.
*As of November 2025, among all LG models using WOLED prior to 4th Gen. OLED, 27GX790B offers the highest brightness.
Perfect Black is UL-verified and delivers true black levels to enhance perceived brightness and contrast, whether it's bright or dark around you.
Perfect colour and 100% colour Fidelity deliver accurate colour expression even under varying lighting conditions, from low light to bright ambient environments.
UL-verified Perfect Reproduction helps ensure that actual game content is faithfully rendered on screen, maintaining intended colour and detail in both dark and bright environments. Unlike static image-based metrics, this certification reflects real-world content reproduction accuracy.
Images have been simulated to enhance feature understanding, and may differ from actual use experience.
Desk peripherals are not included.
Experience deep, lifelike visuals with VESA DisplayHDR™ True Black 500, delivering precise black tones even in the darkest scenes. The monitor’s DCI-P3 99.5% (Typ.) colour gamut ensures colours are presented with accurate detail, reflecting the original intent.
Deeper Detail with VESA DisplayHDR™ True Black 500
Images have been simulated to enhance feature understanding, and may differ from actual use experience.
Featuring AGLR(Anti-glare and low reflection), LG WOLED’s UL-verified advanced eye comfort technologies* minimise frustrating reflections and keep your eyes comfortable, delivering crystal-clear gaming performance with consistent clarity. With UL verifications in key areas—limiting harmful blue light exposure and preventing distractions from flickering lights—these technologies promote visual comfort and contribute to a smooth gaming experience, whether you’re gaming in bright environments or LED-lit rooms.
LG UltraGear 27GX790B monitor on a desk setup displaying a side-by-side comparison labeled ‘non-applied’ and ‘applied,’ showing different visual states of a sci-fi armored character. The desk includes speakers, a keyboard, figurines, a controller, a PC tower, and headphones. Along the bottom are multiple UL certification badges for flicker-free, discomfort glare-free, low blue light, and Eyesafe credentials
Images have been simulated to enhance feature understanding, and may differ from actual use experience.
*LG WOLED screens have been verified as Flicker-Free, Discomfort Glare Free, and Low Blue Light by UL.
*Certificate Number: Flicker-Free Display (OLED) - A196009, Discomfort Glare Free - V563481 (conditions of UGR less than 22), Low Blue Light Hardware Solution Platinum - V745051, Eyesafe 3.0 CPF60 - V745354, Eyesafe 3.0 RPF40 - V275741
*The performance of the above feature may vary depending on the user’s computing environment or conditions.
Desk peripherals not included.
With VESA Certified Dual-Mode, enjoy UltraGear’s fastest performance with up to 720Hz refresh rate—the highest ever introduced. Seamlessly switch between QHD 540Hz for detailed visuals and HD 720Hz for ultra-fast action. Choose your preferred refresh rate and screen size via On-Screen Display, or toggle instantly through LG Switch for optimised gameplay across every genre.
Graphic comparing two gaming scenes: a fantasy warrior rendered in QHD at 540Hz on the left, and a rally race car rendered in HD at 720Hz on the right. The two scenes overlap slightly against a dynamic abstract blue and red background, with ‘540Hz QHD’ and ‘720Hz HD’ labels displayed beside each image
The 27GX790B features DisplayPort 2.1, delivering high-bandwidth connectivity designed for ultra-fast gaming and stable performance even at extreme refresh rates. Complementing this, the USB-C port enables streamlined single-cable display output and data transfer, supporting flexible setups with minimised clutter. Dual HDMI 2.1 ports complete the configuration, helping to ensure smooth integration with gaming PCs and the latest consoles for a fully connected, high-performance environment.
High-speed bandwidth by DisplayPort 2.1
Images have been simulated to enhance feature understanding, and may differ from actual use experience.
DP, HDMI cables are included with the monitor..
The graphics card is NOT included and should be purchased separately.
The ultra-fast 0.02 response time (GtG)* reduces reverse ghosting and provides fast response times, letting you enjoy a whole new gaming performance.
Images have been simulated to enhance feature understanding, and may differ from actual use experience.
*Select 'Faster Mode' to perform '0.02ms Reponse Time'. (Game Adjust → Response Time → Faster Mode).
Powered by AMD FreeSync™ Premium Pro, NVIDIA-validated G-SYNC® compatibility, and VESA AdaptiveSync™ certification, this monitor delivers tear-free visuals, smooth motion, and low latency for precise, fluid gaming performance.
Comparison of fluid gaming image - The left image is tearing, and the Right image is tear-free.
Logos of NVIDIA G-SYNC, VESA AdaptiveSync, and AMD FreeSync Premium Pro.
Images have been simulated to enhance feature understanding, and may differ from actual use experience.
The feature’s performance is evaluated against models that do not use sync technology.
Errors or delays may occur depending on the stability of the network connection.
VESA ClearMR 21000 certification ensures this monitor accurately renders even subtle motion blur around the edges of moving objects, delivering sharp, detailed visuals during fast-paced action. Designed for precision, it helps you stay focused and push closer to victory.
ClearMR 21000 for sharper, cleaner motion
Images have been simulated to enhance feature understanding, and may differ from actual use experience.
Dynamic Action Sync Mode allows gamers to see the action as it occurs in real time so that they can react immediately rather than respond after the delay of internal frame processing.
Black Stabiliser Mode brightens dark areas and gives you better visibility in dark scenes. It can make dark areas brighter to help you find the enemy or game objectives hidden in the dark.
The Crosshair feature helps enhance accuracy in first-person shooter games.
Images have been simulated to enhance feature understanding, and may differ from actual use experience.
The LG Switch app optimises your monitor for both gaming and everyday life. Effortlessly manage your monitor settings—adjust image quality and brightness to your preference, then apply your settings instantly using a hotkey. The app also lets you split the screen into 11 layouts and launch your video call platform in a click—adding convenience and flexibility to your setup.
This video is for LG Switch illustrative purposes only and may not reflect the actual 27GX790B product specifications.
To download the latest LG Switch app, search for 27GX790B in the LG.com Support Menu.
Headsets need to be purchased separately.
Experience a virtually borderless design paired with a fully adjustable stand offering swivel, tilt, and height control. The slim, space-saving base and wide swivel range are engineered to maximise desk space efficiency while giving your setup a clean, refined look.
-30° ~ 30°
-5° ~ 21°
110mm
Clockwise
with DSC
Images have been simulated to enhance feature understanding, and may differ from actual use experience.
Desk peripherals are not included.
Display - Size [Inch]
26.5
Display - Resolution
2560 x 1440
Display - Panel Type
OLED
Display - Aspect Ratio
16:9
Display - Colour Gamut (Typ.)
DCI-P3 99.5% (CIE1976)
Display - Brightness (Typ.) [cd/m²]
335cd/m²
Display - Refresh Rate (Max.) [Hz]
540
Display - Response Time
0.02ms (GtG)
Mechanical - Display Position Adjustments
Tilt/Height/Swivel/Pivot
Size [Inch]
26.5
Aspect Ratio
16:9
Panel Type
OLED
Surface Treatment
Anti-Glare, Low-Reflection of the front polarizer
Response Time
0.02ms (GtG)
Resolution
2560 x 1440
Pixel Pitch [mm]
0.2292 x 0.2292 mm
Colour Depth (Number of Colours)
1.07B
Viewing Angle (CR≥10)
178º(R/L), 178º(U/D)
Brightness (Typ.) [cd/m²]
335cd/m²
Contrast Ratio (Typ.)
1500000:1
Colour Gamut (Typ.)
DCI-P3 99.5% (CIE1976)
Colour Gamut (Min.)
DCI-P3 94.0% (CIE1976)
Refresh Rate (Max.) [Hz]
540
Brightness (Min.) [cd/m²]
300cd/m²
Contrast Ratio (Min.)
1200000:1
Colour Bit
10bit
Size [cm]
67.3
HDMI
YES(2ea)
DisplayPort
YES(1ea)
DP Version
2.1
USB-C
Yes
Headphone out
4-pole (Sound+Mic)
USB Downstream Port
YES(2ea/ver3.0)
USB Upstream Port
YES(via USB-C)
USB-C (Max. Resolution at Hz)
2560 x 1440@540Hz
HDR 10
YES
AMD FreeSync™
FreeSync Premium Pro
Colour Weakness
YES
Smart Energy Saving
YES
Colour Calibrated in Factory
YES
NVIDIA G-Sync™
G-SYNC Compatible
HW Calibration
HW Calibration Ready
Dynamic Action Sync
YES
Black Stabiliser
YES
Crosshair
YES
Others (Features)
VESA DSC Tech
Reader Mode
YES
FPS Counter
YES
VRR
YES
VESA DisplayHDR™
DisplayHDR™500 TRUE BLACK
User Defined Key
YES
Auto Input Switch
YES
RGB LED Lighting
Unity Hexagon Lighting
HDR Effect
YES
Display Position Adjustments
Tilt/Height/Swivel/Pivot
Borderless Design
4-Side Virtually Borderless Design
Wall Mountable [mm]
100 x 100
OneClick Stand
YES
DTS Headphone:X
YES
Dimension with Stand (W x H x D) [mm]
605.2x527.6x220(Up)/605.2x397.6x220(Down)
Dimension without Stand (W x H x D) [mm]
605.2x351.0x51.2
Weight in Shipping [kg]
9.8
Weight with Stand [kg]
6.8
Weight without Stand [kg]
4.3
Product name
UltraGear
Year
Y26
Power Consumption (Sleep Mode)
Less than 0.5W
Power Consumption (DC Off)
Less than 0.3W
AC Input
100~240V (50/60Hz)
Type
External Power(Adapter)
DC Output
19V, 5.0A
Adapter
YES
Display Port
YES (ver 2.1)
HDMI
YES (ver 2.1)
HDMI (Colour/Length)
Black / 1.8m
Others (Accessory)
Cable Holder / Mouse Holder
Power Cord
YES
Dual Controller
YES
UL (cUL)
YES
CE
YES
KC (for Rep. of Korea)
YES
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