LG UltraGear OLED 27-Inch Gaming Monitor 1440p 540Hz 0.02ms G-Sync in Gray - 27GX790B-B

LG 27GX790B-B UltraGear OLED 27-Inch Gaming Monitor 1440p 540Hz 0.02ms G-Sync in Gray

Next-Level Gaming Performance
Experience an unprecedented level of speed and clarity with the LG UltraGear 27GX790B-B 27-Inch OLED Gaming Monitor. This monitor is designed for gamers who demand top-tier performance, offering a Dual Mode setting that shifts between ultra-crisp QHD at up to 540Hz and ultra-fast HD at 720Hz. The incredibly low 0.02ms (GtG) response time ensures minimal blur and virtually zero ghosting, allowing you to keep pace with the fastest in-game action.

Vivid OLED Display with Brilliant Contrast
Immerse yourself in stunning visuals on a 27" QHD OLED screen powered by LG’s latest 4th Gen technology. Enjoy the brightest OLED display yet from UltraGear, with a typical brightness of 335 nits and support for DisplayHDR™ True Black 500. Deep blacks, rich contrast, and a virtually borderless design give you breathtaking detail—perfect for both dark cinematic moments and vibrant battle scenes.

Engineered for Pro-Level Smoothness
Unlock the full potential of your gaming rig with DisplayPort 2.1, delivering the bandwidth needed for sharp, ultra-fast gameplay. NVIDIA® G-SYNC® compatibility and AMD FreeSync™ Premium Pro reduce screen stutter and tearing, keeping your experience smooth even when the action gets intense. Plus, this monitor’s ergonomically adjustable stand and customizable backlighting let you tailor your setup for marathon sessions. Dive into next-level gaming with the LG UltraGear 27GX790B-B and see every move in brilliant detail.

Features

• Outrageous Speed with LG's Brightest OLED Gaming Monitor
  Experience the brightness and speed of 4th Gen OLED on a vivid 27" QHD display—engineered for ultra-smooth, tear-free gameplay. With a refresh rate up to 720Hz¹ and lightning-fast 0.02ms response time, you’ll react faster, track every movement with precision, and outpace your opponents frame by frame with astounding brightness, clarity and speed.
• Our Brightest, Boldest OLED Gaming Monitor
  Powered by UltraGear’s latest OLED with Primary RGB Tandem tech, this is LG’s brightest OLED gaming monitor yet—reaching 335 nits typical brightness for clear visibility in bright scenes. Enhanced APL and reduced ABL keep critical visuals sharp during intense action, while UL Verified Perfect Black² and DisplayHDR™ True Black 500 deliver deep contrast and pinpoint detail.
• Next-Gen OLED Brilliance
  4th Gen Primary RGB Tandem OLED reaches 335 nits typical brightness while using less power than previous UltraGear™ OLED generations. The display's advanced 4-stack RGB structure delivers enhanced contrast, sharper detail, and color precision that stays consistent across every frame.
• Dual Mode: QHD 540Hz for Detail or HD 720Hz for Speed
  Dual Mode pushes gaming speed to the edge, letting you toggle between QHD resolution at 540Hz or HD at 720Hz³ from a hotkey. Gain outrageous speed and responsiveness for split-second decisions and competitive domination.
• DisplayPort 2.1 Delivers Next-Gen Gaming Speed
  DisplayPort™ 2.1 unlocks ultra-fast data speeds for stable, high-refresh gaming up to 720Hz. USB-C keeps your setup clean with single-cable output, and dual HDMI 2.1 ports connect seamlessly to today’s top consoles. More bandwidth. More clarity. More ways to win.
• A virtually instantaneous 0.02 response time (GtG)
  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.
• NVIDIA® G-SYNC® Compatible & AMD FreeSync™ Premium Pro
  NVIDIA® G-SYNC®⁴ Compatible and AMD FreeSync™ Premium Pro deliver smooth, tear-free, low-latency gaming with high refresh rates—so every frame stays fluid and sharp.
• UL-verified for a "perfect" visual experience
  Perfect Black: UL-verified Perfect Black delivers true black levels to enhance perceived brightness and contrast, whether it's bright or dark around you.
  Perfect Color and 100% Color Fidelity- UL verified to deliver accurate color expression even under varying lighting conditions, from low light to bright ambient environments.
  UL-verified Perfect Reproduction delivers that actual game content is faithfully rendered on screen, maintaining intended color and detail in both dark and bright environments.
• Deeper Detail with VESA DisplayHDR™ True Black 500
  Experience breathtaking realism with VESA DisplayHDR™ True Black 500, delivering nuanced shadow detail and rich black expression—even in the darkest game scenes. A 1.5 million:1 contrast ratio pairs with up to 99.5% (typical), DCI-P3 color gamut and Delta E2 color accuracy, to ensure colors are vivid, precise, and true to the creator’s intent—giving gamers and creators alike the confidence to see every frame as it was meant to be seen.
• Five UL Certifications. One Clear Advantage for Eye Comfort.
  This UltraGear™ OLED display is five times UL-certified⁵—for Anti-Glare, Flicker-Free, Low Blue Light, Reduced Blue Light, and Reduced Circadian Stimulating Blue Light. Combined with a matte anti-glare finish, the display helps reduce distractions, keep your view crisp, and maintain visual comfort—so you can stay focused and perform at your best, even during extended gaming sessions.
• ClearMR 21000 Delivers Elite Motion Clarity
  Certified at ClearMR 21000—VESA’s highest motion-clarity tier—this display eliminates the faint blur that lingers around fast-moving objects. Every rapid turn, sprint, and effect stays crisp, helping you react faster and play with greater confidence.
• Unlock Your Potential with Advanced Gaming Features
  Dynamic Action Sync reduces input lag for real-time response
  Black Stabilizer brightens dark scenes to see what's hidden
  FPS Counter shows your real-time frame rate
  Crosshair enhances precision for shooting accuracy
• Personalize Your Display with Switch App
  With the LG Switch app⁶, easily optimize your monitor for gaming or everyday use. Adjust brightness, fine-tune image quality, apply settings with a hotkey, split the screen into 11 layouts, and launch video calls in a click.
• 4-Pole Jack & DTS HP:X: Gaming Audio Unleashed
  Experience lifelike 3D audio with DTS Headphone⁷, pushing out spatial sound to make you feel even more part of the game. The 4-pole headphone jack combines stereo audio and mic input, delivering crisp sound and clear game-play comms through a single connection.
• Virtually Borderless and Adjustable to Gamer Specs
  Dive into gameplay on the 4-side, virtually borderless 27” OLED screen. The slim-profile display has adjustable height, tilt, swivel and pivot controls that let you customize your view, while backlighting amps up your battle station, making every session a vibe.
• Versatile Connectivity
  Versatile connectivity hub: Dual HDMI, DisplayPort 2.1, and USB downstream (x2) and USB upstream ensure seamless connections to all your devices, from consoles and peripherals to productivity gear.
• OLED Protection: 2-Year Limited Warranty & Panel Care Tools
  Rest easy knowing your OLED monitor is built to last. The 2-year limited warranty covers key components, including the OLED panel. And OLED Care tools such as pixel cleaning keep your display sharp, for reliable top-tier performance. Please see Warranty Information on this page for all warranty details.
  

Footnotes:

• ¹Requires graphics card that supports 720Hz refresh rate support (HD). Actual refresh rates may vary depending on computer graphics specifications and configurations.
• ²This LG OLED panel has been certified with “Perfect Black”, “Perfect Color with 100% Color Fidelity” and “Perfect Reproduction”. Certificate Number: Perfect Black (OLED)- V183632, Perfect Color V569367 – “Perfect Reproduction” V756760 by UL.
• ³Requires graphics card that up to 720Hz refresh rate support (Full HD). Actual refresh rates may vary depending on computer graphics specifications and configurations. Graphics card available separately.
• ⁴NVIDIA® G-SYNC® Compatible supports variable refresh rate on GeForce GTX 10 Series and higher GPUs on Display Port, and GeForce RTX 30 Series and higher GPUs on HDMI 2.1.
• ⁵LG OLED panels have been certified as Flicker-Free, Discomfort Glare Free, Low Blue Light, Verified Reduced Blue Light and Verified Reduced Circadian Stimulating 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. Verified for reduced circadian stimulating blue light (V745354). Verified for reduced blue light (V275741).
• ⁶To download the latest version of the LG Switch app, visit LG.com
• ⁷Headphones sold separately. For DTS patents, see http://patents.dts.com. Manufactured under license from DTS, Inc. or its affiliates. DTS trademarks and logos are registered trademarks or trademarks of DTS, Inc. in the United States and other countries. ALL RIGHTS RESERVED.