LG 27” UltraGear™ OLED Gaming Monitor, Dual Mode (720Hz@HD, 540Hz@QHD), DP2.1, Black

27” LG UltraGear OLED Gaming Monitor, Dual Mode (720HzHD, 540HzQHD), DP2.1, Black

Key Features

• 27-inch QHD (2560x1440) OLED display
• VESA DisplayHDR™ True Black 500
• OLED with QHD 540Hz - HD 720Hz Dual-Mode
• 0.02ms (GtG) response time
• NVIDIA® G-SYNC® Compatible / VESA Certified AdaptiveSync / AMD FreeSync™ Premium Pro
• Ergonomic design with tilt, swivel, pivot, adjustable height and mountable wall

Description

LG's Brightest* 4th Gen OLED
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. 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.

Next-Gen OLED Brilliance
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 colour precision. Experience clearer shadows, deep immersion, and visual consistency in every frame—built for serious gaming.

Deeper Detail with VESA DisplayHDR™ True Black 500
Experience unparalleled depth and vibrant realism with VESA DisplayHDR™ True Black 500, delivering detailed black expression even in the darkest scenes. With DCI-P3 99.5% (Typ.) colour gamut, the monitor provides that colours are displayed with realistic detail, as close to the original intent as possible.

UL-verified advanced eye comfort technologies
LG UltraGear's UL-verified advanced eye comfort technologies minimize frustrating reflections and are designed with visual comfort in mind, delivering crystal-clear gaming performance with consistent clarity. With UL verifications in key areas—reducing screen flicker, minimizing discomfort glare—these technologies promote visual comfort and contribute to a smoother gaming experience, whether you’re gaming in bright environments or LED-lit rooms.

720Hz(@HD) – 540Hz(@QHD) Dual-Mode with selectable options
With VESA Certified Dual-Mode, enjoy UltraGear’s fastest performance with up to 720Hz—the highest refresh rate 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.

Smooth, seamless motion with 720Hz refresh rates
At 720Hz, each frame transitions almost instantaneously, producing motion that appears continuous to the human eye. With significantly reduced blur, tearing, and latency, gameplay becomes smoother, clearer, and more lifelike—allowing even the fastest moves to stay sharp and fluid from start to finish.

High-speed bandwidth by DisplayPort 2.1
The latest DisplayPort 2.1 on the 27GX790B delivers next-generation bandwidth optimised for ultra-high-speed gaming, supporting stable performance even at extreme refresh rates. Extending this connectivity, the USB-C port supports streamlined single-cable display output and data transfer—ideal for modern setups that require flexibility without extra clutter. Completing the configuration, dual HDMI 2.1 ports can provide smooth compatibility with the latest consoles and gaming PCs, creating a fully integrated high-performance environment across devices.

Overwhelming speed, diving into gaming
The ultra-fast 0.02 response time (GtG), reducing reverse ghosting and providing fast response time, lets you to enjoy a whole new gaming performance

Certified with a widely adopted technology
Powered by AMD FreeSync™ Premium Pro, NVIDIA-validated G-SYNC® compatibility, and VESA AdaptiveSync™ certification, this monitor provides tear-free, ultra-smooth visuals and low latency, delivering unmatched gaming precision and fluidity.

ClearMR 21000 for sharper, cleaner motion
VESA certified by ClearMR 21000, this monitor finally captures even the subtle blurring that occurs around the edges of moving objects, displaying fast-moving action with sharpness and detail. Also, it allows you to take a step closer to victory.

Smarter control, seamless switching by LG Switch
With the LG Switch app, it's easy to optimise your monitor for both gaming and everyday use. 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—bringing even more convenience to your setup.

Plugin for immersive
sound effect
Enjoy your games while having voice chat by connecting easily with 4-pole headphone out. Also, you can feel even more immersive with virtual 3D sound with DTS Headphone:X.

Compact and sleek
Experience our virtually borderless design featuring a fully adjustable base with swivel, tilt, and height. A clutter-free slim stand and wide-range swivel adjustment are designed to minimise desk space usage and eliminate dead space efficiently, while adding a sleeker, more refined look to your setup.

Specifications

Display
Display brightness (typical)	335 cd/m²
Screen shape	Flat
Display number of colours	1.07 billion colours
Native aspect ratio	16:9
Maximum refresh rate	540 Hz
Display diagonal	68.6 cm (27")
Response time	0.02 ms
Display resolution	2560 x 1440 pixels
Display technology	OLED
Contrast ratio (typical)	1500000:1
Viewing angle, horizontal	178°
Viewing angle, vertical	178°
Pixel pitch	0.2292 x 0.2292 mm
HD type	Quad HD
Touchscreen	No
High Dynamic Range (HDR) supported	Yes
Panel type	OLED
High Dynamic Range (HDR) technology	High Dynamic Range 10 (HDR10), DisplayHDR True Black 500
Display diagonal (metric)	67 cm
Colour gamut standard	DCI-P3
Response time measurement type	GTG (Gray to Gray)
Performance
NVIDIA G-SYNC type	G-SYNC Compatible
AMD FreeSync type	FreeSync Premium Pro
AMD FreeSync	Yes
NVIDIA G-SYNC	Yes
FPS counter	Yes
Design
Market positioning	Gaming
Product colour	Black
Ports & interfaces
Built-in USB hub	Yes
USB upstream port type	USB Type-C
HDMI ports quantity	2
DisplayPorts quantity	1
Headphone out	Yes
HDMI	Yes
DisplayPort version	2.1
Number of downstream ports	1
Ergonomics
VESA mounting	Yes
Panel mounting interface	100 x 100 mm
Swivelling	Yes
Height adjustment	Yes
Pivot	Yes
Tilt adjustment	Yes
Power
Power supply type	External
AC input voltage	100 - 240 V
AC input frequency	50/60 Hz
Power consumption (standby)	0.5 W
Power consumption (off)	0.3 W
Energy efficiency scale	A to G
Energy efficiency class (SDR)	F
Energy efficiency class (HDR)	G
Energy consumption (SDR) per 1000 hours	25 kWh
Energy consumption (HDR) per 1000 hours	29 kWh
Weight & dimensions
Width (with stand)	605.2 mm
Depth (with stand)	220 mm
Height (with stand)	527.6 mm
Width (without stand)	605.2 mm
Height (without stand)	351 mm
Depth (without stand)	51.2 mm
Weight (with stand)	6.8 kg
Weight (without stand)	4.3 kg
Package width	790 mm
Package depth	496 mm
Package height	182 mm
Package weight	9.8 kg
Packaging data
Package type	Box
Package width	790 mm
Package depth	496 mm
Package height	182 mm
Package weight	9.8 kg
Cables included	HDMI, DisplayPort
Packaging content
Cables included	HDMI, DisplayPort
Other features
FPS counter	Yes
Width (without stand)	605.2 mm
Height (without stand)	351 mm
HDMI	Yes
Depth (without stand)	51.2 mm
Energy efficiency scale	A to G
Power supply type	External
Touchscreen	No
Package type	Box
Technical details
Power supply type	External
Weight (with stand)	6.8 kg
Touchscreen	No