LG - UltraGear 45" WQHD OLED 240Hz 0.03ms G-SYNC FreeSync Premium Pro Gaming Monitor with DisplayHDR400 TRUE - Black
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Highlights
- Key Specs
- Refresh Rate: 240Hz (The number of frames per second the device can produce natively without enhancement. Higher rates help produce smooth, seamless pictures.)
- Maximum Resolution: 3440 x 1440 (Maximum resolution refers to the highest number of pixels that a screen can process and display. Higher resolution signals produce more detailed images.)
- Response Time: 0.03 milliseconds (The speed at which pixels can change colors is called response time. It is measured in milliseconds (ms).)
- Synchronization Technology: FreeSync Premium Pro (AMD Adaptive Sync), G-SYNC Compatible (NVIDIA Adaptive Sync) (Generally, these technologies allow syncing between a computer/console game's frame rate and the device's refresh rate for a smoother display without tearing.)
- Screen Size: 44.5 inches (Size of the screen, measured diagonally from corner to corner.)
- OLED Technology: Standard OLED
- Display Connector(s): 2 x HDMI 2.1, 1 x DisplayPort 1.4 (The number and type of connectors used to connect to an external display.)
- General
- 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
- Operating System Compatibility: Not Applicable, Not Applicable, Not Applicable, Not Applicable, Not Applicable
- Display
- Refresh Rate: 240Hz (The number of frames per second the device can produce natively without enhancement. Higher rates help produce smooth, seamless pictures.)
- Maximum Resolution: 3440 x 1440 (Maximum resolution refers to the highest number of pixels that a screen can process and display. Higher resolution signals produce more detailed images.)
- Native Resolution: 3440 x 1440 (Native resolution of a screen refers to its single, fixed resolution. Sometimes screens must scale an image up or down in order to fit the native resolution. This can cause a loss of resolution or detail.)
- Contrast Ratio: 1,500,000:1 (Measured difference between a displayed image's brightest whites and darkest blacks. The larger the first number, the more detail and color that can be displayed.)
- Response Time: 0.03 milliseconds (The speed at which pixels can change colors is called response time. It is measured in milliseconds (ms).)
- Display Type: OLED
- Synchronization Technology: FreeSync Premium Pro (AMD Adaptive Sync), G-SYNC Compatible (NVIDIA Adaptive Sync) (Generally, these technologies allow syncing between a computer/console game's frame rate and the device's refresh rate for a smoother display without tearing.)
- Aspect Ratio: 21:9 (The measurement of the width of a screen compared to the height of a screen, expressed as a ratio.)
- Curved Screen: true
- Brightness: 275 candela per square meter (A measure of the total light output.)
- Screen Size: 44.5 inches (Size of the screen, measured diagonally from corner to corner.)
- High Dynamic Range (HDR): true (An HDR-compatible 4K TV or other HDR-compatible product displays HDR video content when it's available from sources like 4K Ultra HD Blu-ray Discs and 4K streaming services.)
- High Dynamic Range Format: VESA Certified DisplayHDR 400 True Black (There are a few HDR formats that tell the TV or other HDR-compatible product how to best utilize its capabilities to display HDR content. HDR technology can support one or multiple formats, each with various benefits to picture quality.)
- OLED Technology: Standard OLED
- Connectivity
- Number of DisplayPort Inputs (Total): 1
- Number of HDMI Inputs (Total): 2
- Display Connector(s): 2 x HDMI 2.1, 1 x DisplayPort 1.4 (The number and type of connectors used to connect to an external display.)
- Number of USB Ports (Total): 3
- USB Ports: 2 x USB-A, 1 x USB-C (The number and type of USB ports the product has.)
- Headphone Jack: true (The device features an interface that allows for the connection of headphones.)
- Compatibility
- Wall Mountable: true (The product is able to be secured to a wall. Some products are designed ready to mount, while others may require additional hardware/accessories for installation.)
- Features
- Tiltable: true
- Adjustable Stand Height: true
- Built-In Webcam: false
- Integrated Speaker(s): true
- Dimensions
- Product Height With Stand: 26.1 inches
- Product Height Without Stand: 18 inches
- Product Width: 39 inches (The out of box width of the item. Width is measured as the horizontal distance from one side of the item to the other as it would be primarily used or placed.)
- Product Depth (With Stand): 13.3 inches
- Product Depth Without Stand: 8.6 inches
- Product Weight: 30 pounds (The out of box weight of the item.)
- Stand Included: true
- Certifications Listings & Approvals
- ENERGY STAR Certified: false (Devices carrying the ENERGY STAR service mark, such as computer products and peripherals, kitchen appliances, and other products, generally use 20% to 30% less energy than required by federal standards.)
- EPEAT Qualified: false (The Electronic Product Environmental Assessment Tool (EPEAT) was designed to provide an environmental assessment tool for purchasers. In order to qualify for EPEAT, a product must meet all 23 required criteria.)
- Warranty
- Warranty - Parts: 2-Year Parts and Labor
- Warranty - Labor: 2-Year Parts and Labor
- Other
- UPC: 195174147719
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.
- 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 app⁵, 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.
- 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.
Whats Included
- Monitor
- Power Cable
- HDMI 2.1 Cable
- DisplayPort Cable
- USB-C Cable
- Remote Control (with batteries)
Product Manuals
Disclaimers
- ¹Requires graphics card that supports up to 240Hz refresh rate support. Actual refresh rates may vary depending on computer graphics specifications and configurations.
- ²NVIDIA 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.
- ³Based on published specifications of OLED gaming monitors as of March 2026.
- ⁴Some gaming services may require a subscription and gamepad. An LG Account and acceptance of the relevant Terms and Conditions are required to access network-based smart services and features, including streaming apps and webOS features. Without an LG Account, only external device connections (e.g. via USB-C or HDMI) are available. There is no fee to create an LG Account.
- ⁵To download the latest version of the LG Switch app, visit LG.com
Compare similar products
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.
Experience lightning-quick speed with up to a 240Hz refresh rate¹ and 0.03ms response time on a huge 45" WQHD curved OLED monitor. UltraGear Fact: The 45-inch 21:9 45” UltraGear OLED monitor delivers more screen area than a 49-inch 32:9 aspect ratio screen. The sweeping, steep 800R curve surrounds you in the action. And with the 240Hz refresh rate, and 0.03ms response time, the action is fast, the play seamless and precise. Dive into UltraGear OLED’s immaculate visuals with up to 98.5% of DCI-P3 color coverage and a 1,500,000:1 contrast ratio for stunning blacks and vibrant colors. LG's game-changing webOS streaming platform adds ease and versatility, letting you enjoy your favorite entertainment streaming platforms as well as cloud gaming services from one, simple to access home screen. Adaptive sync technologies FreeSync Premium Pro and NVIDIA G-SYNC compatibility ensure tear-free, stutter-free performance, whether you're on PC or next-gen consoles. Plus, the UltraGear's 2-year OLED limited warranty and OLED Care features give you peace of mind, keeping your UltraGear monitor in top shape. Designed for gamers, the virtually borderless design complements any gaming setup, with height, tilt, and pivot adjustments for optimal comfort. The RBG backlighting creates the mood that’ll upgrade any battlestation.
A revolution in large screen gaming resolution. The world’s largest 5K2K gaming monitor¹ delivers unmatched scale with ultra-high-definition clarity built for gamers who want everything bigger and sharper. UltraGear evo's massive 52-inch 21:9 WUHD (5120×2160) display packs a dense 107 PPI, keeping fine detail crisp across an enormous canvas. A 1000R curved VA panel wraps wide scenes naturally into your field of view, while VESA DisplayHDR 600 boosts brightness and contrast for striking highlights and detailed shadows. Up to 95% DCI-P3 color gamut coverage adds rich color depth and tonal detail, giving games a bold, cinematic look. Performance matches the spectacle. A 240Hz refresh rate² and 1ms (GtG) response time keep motion smooth and controlled, while AMD FreeSync Premium reduces tearing, stutter for fluid, responsive gameplay. Future-ready connectivity includes DisplayPort 2.1, dual HDMI 2.1 ports, and USB-C with up to 90W power delivery. Built-in speakers, a 4-pole headphone jack, LED backlighting, and tilt, swivel, and height adjustment complete a large-format gaming display designed to dominate your setup.
Samsung’s 49" Odyssey OLED G9 Dual QHD Curved Gaming Monitor takes gaming to new heights. Content springs to life with a wider color spectrum and vibrant images on a 5120 x 1440 resolution screen. OLED technology delivers near instant reaction time with 0.03ms (GtG) and a 240Hz refresh rate. G-Sync compatibility keeps the GPU and panel in perfect sync, which reduces choppiness, screen lag, and image tearing. The wide 32:9 screen in Dual QHD resolution and 110 PPI provides an unparalleled level of clarity. OLED Glare Free technology significantly reduces glare from external sources for a distraction-free presentation. OLED Safeguard automatically adjusts brightness, reduces heat, and dims during breaks. Deep Black Levels depict truer black and dark colors on screen for supreme depth in every game. The ergonomic height-adjustable stand with tilting enables the ideal angles during game play. HDMI 2.1, Micro HDMI, DisplayPort, USB-C Upstream and Downstream ports provide increased flexibility and reduce cable clutter. CoreSync & Core Lighting+ add color and enhance the screen’s surroundings for an immersive experience. Picture-in-Picture and Picture-by-Picture makes multitasking easy and efficient. 3-Year Warranty.
| Pros for LG - UltraGear 45" WQHD OLED 240Hz 0.03ms G-SYNC FreeSync Premium Pro Gaming Monitor with DisplayHDR400 TRUE - Black | |||
|---|---|---|---|
| There were no pros for this product— | Overall Performance, Screen Size, OLED Quality, Refresh Rate, Resolution | There were no pros for this product— | Overall Performance, Screen Size, Refresh Rate, OLED Quality, Resolution |
| Cons for LG - UltraGear 45" WQHD OLED 240Hz 0.03ms G-SYNC FreeSync Premium Pro Gaming Monitor with DisplayHDR400 TRUE - Black | |||
| There were no cons for this product— | Connectivity, Text Clarity, Software | There were no cons for this product— | Connectivity, Speakers, Glare, Port Selection |
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