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LG 45GX900A-B UltraGear 45" UW-QHD Curved OLED Gaming Monitor - 240Hz - 0.03ms - DisplayHDR True Black 400 - NVIDIA G-SYNC Compatible
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Product Features
Product Overview
The LG UltraGear 45GX900A-B is a premium 45-inch curved OLED gaming monitor engineered for immersive, high-performance gameplay. Its 21:9 ultrawide aspect ratio and 3440x1440 UW-QHD resolution deliver expansive field-of-view and sharp detail, while the OLED panel provides exceptional contrast with deep blacks and vibrant colors.
Designed specifically for gaming, this monitor combines a 240Hz refresh rate with an ultra-fast 0.03ms GTG response time to eliminate motion blur and ghosting. NVIDIA G-SYNC compatibility, AMD FreeSync Premium Pro, and VESA Certified AdaptiveSync ensure smooth, tear-free visuals across a wide range of frame rates. The DisplayHDR True Black 400 certification and 98.5% DCI-P3 color coverage deliver stunning HDR content with accurate color reproduction.
Relevant factors for this section include Number of Screens, Screen Size Class, Viewable Screen Size, Maximum Resolution. When those points are considered together, they give buyers a clearer picture of how the product is equipped, how it fits into deployment, and what kind of day-to-day role it is meant to support.
Technical Overview
This monitor features a 45-inch class OLED display with a 44.5-inch viewable area and a 1500R curvature that wraps the screen around your field of vision. The OLED technology enables per-pixel lighting control, achieving a native contrast ratio of 1,200,000:1 and a dynamic contrast ratio of 1,500,000:1 for incredibly deep blacks and bright highlights.
The panel supports 1.07 billion colors and covers 98.5% of the DCI-P3 color space, ensuring rich, accurate color for gaming and content creation. With a peak brightness of 1300 cd/m² and VESA DisplayHDR True Black 400 certification, HDR content appears with exceptional luminance and shadow detail.
Relevant factors for this section include Number of Screens, Screen Size Class, Viewable Screen Size, Maximum Resolution. When those points are considered together, they give buyers a clearer picture of how the product is equipped, how it fits into deployment, and what kind of day-to-day role it is meant to support.
Key Product Advantages
The LG UltraGear 45GX900A-B stands out with its combination of OLED technology, high refresh rate, and comprehensive gaming features. The OLED panel delivers perfect blacks and infinite contrast, while the 240Hz refresh rate and 0.03ms response time provide exceptionally smooth motion handling for competitive gaming.
Advanced Gaming Features
Includes NVIDIA G-SYNC compatibility, AMD FreeSync Premium Pro, and VESA Certified AdaptiveSync for tear-free gaming across different hardware configurations.
- Black Stabilizer for visibility in dark scenes
- Crosshair overlay for aiming precision
- FPS counter for performance monitoring
- Dynamic Action Sync reduces input lag
Enhanced Visual Technologies
Micro Lens Array+ technology improves brightness and viewing angles, while VESA ClearMR 13000 certification ensures minimal motion blur for clear fast-moving content.
- Ultra Low Latency mode
- Picture-by-Picture and Picture-in-Picture
- Hardware calibration support
- RGB LED Unity Hexagon Lighting
Deployment / Use Cases
This monitor is optimized for serious gaming setups where visual performance and immersion are critical. The 45-inch curved ultrawide format provides an expansive field of view that enhances situational awareness in first-person shooters, racing simulators, and open-world games.
Professional content creators will appreciate the accurate color reproduction and HDR capabilities for video editing, photo work, and digital content production. The monitor's connectivity options, including USB Type-C with power delivery, make it suitable for modern gaming PCs, consoles, and creative workstations.
Competitive Gaming
The 240Hz refresh rate and 0.03ms response time give competitive gamers a clear advantage in fast-paced titles where every millisecond counts.
Immersive Entertainment
The curved 45-inch OLED display with 21:9 aspect ratio creates a cinematic experience for movies, streaming content, and single-player gaming adventures.
Physical Profile
The monitor features a sleek L-shaped stand with height adjustment (21.33" to 26.05"), swivel, and tilt capabilities for optimal viewing ergonomics. With dimensions of 39.08" wide, 13.33" deep, and 26.05" high with stand, it provides a substantial desktop presence while maintaining a clean, modern aesthetic. The monitor weighs 29.76 lb with stand and is VESA mount compatible for alternative installation options.
- Width
- 39.08" (992.70 mm)
- Depth
- 8.58" (218 mm)
- Height
- 17.99" (457 mm)
- Weight
- 19.62 lb (8900 g)
Highlights
- 45-inch curved OLED display with 3440x1440 UW-QHD resolution
- 240Hz refresh rate with 0.03ms GTG response time for smooth gameplay
- VESA DisplayHDR True Black 400 certification with 1300 cd/m² peak brightness
- 98.5% DCI-P3 color gamut covering 1.07 billion colors
- NVIDIA G-SYNC compatible with AMD FreeSync Premium Pro support
- Adjustable stand with height, swivel, and tilt adjustments
- Comprehensive connectivity: 2x HDMI, 1x DisplayPort, 1x USB Type-C
- Built-in USB hub with 3 total USB ports including 2 USB 3.0 downstream
- Integrated 2-speaker system with DTS Headphone:X support
- Eye comfort features: anti-glare, low blue light, and flicker-free technology
Specifications
| Specifications | |
|---|---|
| Manufacturer | LG Electronics |
| Manufacturer Part Number | 45GX900A-B |
| Brand Name | LG |
| Product Line | UltraGear |
| Product Model | 45GX900A-B |
| Product Name | UltraGear 45GX900A-B Widescreen Gaming OLED Monitor |
| Product Type | Gaming OLED Monitor |
| Technical Information | |
| Number of Screens | 1 |
| Screen Size Class | 45" |
| Viewable Screen Size | 44.5" |
| Screen Mode | UW-QHD |
| Panel Technology | OLED |
| Response Time | 0.03 ms |
| Response Time Details | 0.03 ms GTG |
| Aspect Ratio | 21:9 |
| Pixel Pitch | 0.30300 mm x 0.30300 mm |
| Horizontal Viewing Angle | 178° |
| Vertical Viewing Angle | 178° |
| Mount Type | Wall Mountable |
| Features | VESA DisplayHDR True Black 400,Ultrawide Game View,NVIDIA G-SYNC,Reading Mode,Auto Input Switch,Black Stabilizer Technology,Color Calibration,Color Weakness Mode,Crosshair,Dynamic Action Sync,FPS Counter,HDR10,Hardware Calibration,Picture by Picture,Picture in Picture,RGB LED Unity Hexagon Lighting,Smart Energy Saving,DTS Headphone: X,Dual Controller,True Color Pro,On-screen Display (OSD),Micro Lens Array+ Technology,Eye Comfort Technology,Anti-glare,Low Blue Light,Flicker-free,VESA ClearMR 13000,Ultra Low Latency |
| Curved Screen | Yes |
| Adjustable Stand | Yes |
| Stand Adjustments | Swivel,Height,Tilt |
| Video | |
| Maximum Resolution | 3440 x 1440 |
| Standard Refresh Rate | 240 Hz |
| Color Supported | 1.07 Billion Colors |
| Native Contrast Ratio | 1,200,000:1 |
| Dynamic Contrast Ratio | 1,500,000:1 |
| Brightness | 275 cd/m² |
| Tearing Prevention Technology | Adaptive Sync/FreeSync Premium Pro/G-sync Compatible |
| Color Gamut | 90% DCI-P3 (CIE 1976),98.5% DCI-P3 (CIE 1976) |
| Brightness (Peak) | 1300 cd/m² |
| Audio | |
| Number of Speakers | 2 |
| Speakers | Yes |
| Interfaces/Ports | |
| HDMI | Yes |
| USB | Yes |
| DisplayPort | Yes |
| USB Type-C | Yes |
| Total Number of HDMI Ports | 2 |
| Number of DisplayPorts | 1 |
| Number of USB Ports | 3 |
| Number of USB 3.0 Downstream Ports | 2 |
| Total Number of USB Type-C Ports | 1 |
| Built-in Devices | |
| Built-in Devices | USB Hub |
| Physical Characteristics | |
| VESA Mount Compatible | Yes |
| Height | 17.99" (457 mm) |
| Width | 39.08" (992.70 mm) |
| Depth | 8.58" (218 mm) |
| Height with Stand | 26.05" (661.70 mm) |
| Width with Stand | 39.08" (992.70 mm) |
| Depth with Stand | 13.33" (338.60 mm) |
| Weight (Approximate) | 19.62 lb (8900 g) |
| Weight with Stand (Approximate) | 29.76 lb (13500 g) |
| Compressed Height with Stand | 21.33" (541.70 mm) |
| Extended Height with Stand | 26.05" (661.70 mm) |
| Miscellaneous | |
| Application/Usage | Gaming |
| UL Listed | Yes |
| Warranty | |
| Limited Warranty | 2 Year |
FAQ
What is the actual viewable screen size of this 45-inch monitor?
The monitor has a 45-inch class designation with a 44.5-inch viewable screen size. The curved OLED panel provides an immersive viewing experience with a 1500R curvature that wraps around your field of vision, making the effective viewing area feel expansive while maintaining sharp detail across the entire ultrawide display.
Does this monitor support both NVIDIA G-SYNC and AMD FreeSync?
Yes, the LG UltraGear 45GX900A-B is NVIDIA G-SYNC compatible and also supports AMD FreeSync Premium Pro. It carries VESA Certified AdaptiveSync certification, ensuring tear-free gaming across a wide range of frame rates with both NVIDIA and AMD graphics cards. This adaptive sync technology works seamlessly with gaming PCs and compatible consoles.
What HDR standard does this monitor support?
This monitor is certified for VESA DisplayHDR True Black 400, which is specifically designed for OLED displays. It achieves a peak brightness of 1300 cd/m² while maintaining perfect blacks, resulting in exceptional contrast for HDR content. The monitor also supports HDR10 content, making it compatible with most HDR gaming and streaming sources.
What connectivity options are available on this monitor?
The monitor provides comprehensive connectivity including two HDMI ports, one DisplayPort, and one USB Type-C port that supports data, video, and power delivery. It also features a built-in USB hub with three total USB ports, including two USB 3.0 downstream ports for connecting peripherals. This connectivity suite supports modern gaming PCs, consoles, and laptops with a single-cable solution via USB Type-C.
Is the stand adjustable and is the monitor VESA mount compatible?
Yes, the included L-shaped stand offers height adjustment from 21.33 inches to 26.05 inches, along with swivel and tilt functionality for optimal ergonomic positioning. The monitor is also VESA mount compatible, allowing you to use third-party monitor arms or wall mounts for alternative installation options that save desk space or enable multi-monitor setups.
What eye comfort features does this gaming monitor include?
LG has incorporated multiple eye comfort technologies including an anti-glare coating to reduce reflections, low blue light mode to minimize eye strain during extended gaming sessions, and flicker-free backlighting that eliminates screen flicker at all brightness levels. These features work together to provide a more comfortable viewing experience for marathon gaming or work sessions.
| Qty | Price | Available |
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