The UltraGear 45” OLED Smart gaming monitor delivers the speed, scale, and smart performance serious players demand. The ultra-wide 21:9 display provides more usable screen space than a 49” 32:9 setup, giving you a broader view for deeper, more controlled gameplay. OLED technology powers vivid color, deep blacks, and a 1.5M:1 contrast ratio, enhanced by DisplayHDR True Black 400 and up to 98.5% DCI-P3 coverage. Stay competitive with a 240Hz refresh rate¹ and ultra-fast 0.03ms (GtG) response time for sharp, fluid motion with reduced blur. NVIDIA G-SYNC Compatible² and AMD FreeSync Premium Pro help keep gameplay smooth and tear-free. MLA+ technology boosts brightness up to 1300 nits peak for stronger highlights and better visibility. The 800R curve pulls you deeper into the action, while the virtually borderless design keeps your focus locked in. Built-in webOS lets you stream content or jump into cloud gaming—no PC or console required. USB-C with 65W power delivery simplifies your setup, while the adjustable stand keeps you comfortable through every session.
OLED Gaming Just Went Smart
The UltraGear 45” OLED gaming monitor combines ultra-wide scale, 240Hz speed, and 0.03ms response time for sharp, fluid gameplay with stunning contrast and color. With built-in webOS for streaming and cloud gaming, plus USB-C connectivity, it delivers a complete gaming and entertainment setup in one display.
The webOS-powered smart gaming monitor
Meet the smart gaming monitor powered by webOS and AI—built for how you play.³ Stream your favorite services and shows with free LG Channels and top apps, or jump straight into cloud gaming—no PC or console required. Everything’s right on screen, easily controlled with the remote for quick, hassle-free access.
alpha 8 AI Processor Powers Smarter Performance
Powered by the alpha 8 AI Processor 4K Gen9, your Smart Monitor intelligently optimizes picture and sound in real time. Think of it as the brain behind the experience—enhancing sharpness, balancing brightness, and improving audio clarity so everything looks and sounds better with less effort.
AI Sound Enhances Voices and Key Audio Cues
The AI Sound setting analyzes on-screen action and separates voices, sound effects, and background audio. AI Sound helps keep team comms clear while highlighting important gameplay cues—like approaching footsteps or nearby action—through speakers or connected headphones.
The LG Gaming Portal is now open
Browse LG’s Gaming Portal⁴ with a gamepad or remote, track rankings and points, and jump into a wide mix of games—from AAA titles to casual favorites. With access to leading cloud gaming services including Xbox Cloud Gaming, GeForce NOW, and Amazon Luna, plus native webOS app games, you can start playing instantly—no console or PC required.
Size Matters in OLED Gaming
The 21:9 45” UltraGear OLED delivers the ultimate ultra-wide screen space for gaming, offering more screen area than a 49” 32:9 screen. Get ready for a bigger, more immersive gaming experience that pulls you deeper into the action.
Bright OLED with MLA+
MLA+ pushes OLED brightness further, hitting up to 1300 nits peak for stronger highlights and better visibility in every scene. By improving light efficiency and reducing loss, MLA+ delivers brighter, visuals with enhanced contrast—so games look sharper and more defined.
The 800R Curve: Surround Yourself in the Action
See and feel the action all around you with the dramatic 800R curve. This steep curvature extends your periphery, pulling you deeper into the game and making the action more intense.
Bright Picture. Deep Blacks, Brilliant Detail: OLED Gaming FTW
Get lost in vivid visuals with OLED technology, delivering exceptional brightness, up to 98.5% of DCI-P3 color coverage, a 1.5M:1 contrast ratio, and DisplayHDR True Black 400. Every gaming scene pops with deep blacks, brilliant highlights, and cinematic color.
Three UL Certifications. One Clear Advantage for Eye Comfort.
This UltraGear OLED display is five times UL-certified⁵—for Discomfort Glare Free, Flicker-Free, and Low 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.
Up to 240Hz & 0.03ms – Outrageous OLED Gaming Speed
Game at the speed of OLED with an ultra-fast 240Hz and near instantaneous 0.03ms (GtG) response time. The faster speed lets you respond quickly to opponents and enjoy smoother scenes with less lag or ghosting.
NVIDIA G-SYNC Compatible & AMD FreeSync Premium Pro
Minimize screen tearing and stuttering with NVIDIA G-SYNC compatibility and AMD FreeSync Premium Pro. These adaptive sync technologies help keep gameplay smooth and responsive by matching the monitor’s refresh rate to your GPU—so fast action stays clear with reduced blur and ghosting.
Serious Connectivity for Serious Gamers
Simplify your setup with USB-C—connect your laptop and get up to 65W power delivery through a single cable. For gaming, tap into WQHD resolution at up to 240Hz via DisplayPort 1.4 or HDMI 2.1 for smooth, seamless performance.
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.
Action As It Happens with Dynamic Action Sync
Dynamic Action Sync minimizes input lag for faster reactions—so you can respond to every move, shot, or turn the instant it happens.
Black Stabilizer
Black Stabilizer brightens dark scenes, helping gamers spot enemies hiding in the shadows and react quickly during sudden flashes—keeping you one step ahead in every battle.
Advantage of Accuracy with Crosshair
Crosshair offers an accuracy advantage with center-display crosshairs that provide enhanced vision and precision for increased accuracy in first-person shooter games.
Battlestation upgrade Adjustable to Gamer Specs
Go bigger with a virtually borderless 45” OLED display built to keep you locked in. UltraGear’s slim, streamlined design pairs with height, tilt, and swivel adjustments—so you can dial in your perfect view and stay comfortable through every session.
| Manufacturer | LG |
|---|---|
| Set Product as New from Date | Jun 2, 2026 |
| Set Product as New to Date | Aug 2, 2026 |
| Specification | Brand LG Model Number 45GX90SB-B Product Name UltraGear 45" WQHD OLED 240Hz 0.03ms G-SYNC FreeSync Premium Pro Gaming Monitor with DisplayHDR400 TRUE BLACK Color Black Refresh Rate 240Hz Maximum Resolution 3440 x 1440 Native Resolution 3440 x 1440 Contrast Ratio 1,500,000:1 Response Time 0.03 milliseconds Display Type OLED Panel Type Not Applicable Synchronization Technology FreeSync Premium Pro (AMD Adaptive Sync) Aspect Ratio 21:09:00 Curved Screen Yes Brightness 275 candela per square meter Screen Size 44.5 inches High Dynamic Range (HDR) Yes High Dynamic Range Format VESA Certified DisplayHDR 400 True Black Number of DisplayPort Inputs (Total) 1 Number of HDMI Inputs (Total) 2 Display Connector(s) 2 x HDMI 2.1 Number of USB Ports (Total) 3 USB Ports 2 x USB-A Headphone Jack Yes Wall Mountable Yes Tiltable Yes Adjustable Stand Height Yes Built-In Webcam No Integrated Speaker(s) Yes Product Height With Stand 26.1 inches Product Height Without Stand 18 inches Product Width 39 inches Product Depth (With Stand) 13.3 inches Product Depth Without Stand 8.6 inches Product Weight 30 pounds Stand Included Yes ENERGY STAR Certified No EPEAT Qualified No Operating System Compatibility Not Applicable Warranty - Parts 2-Year Parts and Labor Warranty - Labor 2-Year Parts and Labor |
| Hard Drive | 8 GB |