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LG 45GX90SA-B UltraGear 45" Curved OLED Gaming Monitor - UW-QHD 3440 x 1440240Hz - HDR - Black
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Product Features
Product Overview
The LG UltraGear 45GX90SA-B is a premium 45-inch curved OLED gaming monitor engineered for immersive, high-performance gameplay. Its ultra-wide UW-QHD resolution (3440x1440) delivers expansive visuals with sharp detail, while the OLED panel ensures perfect blacks, infinite contrast, and vibrant colors. Designed specifically for gaming, this monitor combines a 240Hz refresh rate with an ultra-fast 0.03ms response time to eliminate motion blur and ghosting, providing a competitive edge in fast-paced titles.
Beyond raw performance, the monitor features a comprehensive suite of gaming technologies including NVIDIA G-SYNC Compatible and AMD FreeSync Premium support for tear-free visuals, HDR10 and VESA DisplayHDR True Black 400 certification for enhanced dynamic range, and built-in gaming utilities like crosshair overlay and FPS counter. The curved screen design enhances immersion by wrapping the field of view, while the adjustable stand offers ergonomic flexibility with height, swivel, and tilt adjustments to suit any setup.
Technical Overview
At the core of the 45GX90SA-B is a 45-inch class OLED display with a 44.5-inch viewable area, offering a 21:9 ultra-wide aspect ratio and a pixel pitch of 0.303mm x 0.303mm for crisp image quality. The OLED panel delivers a 1,500,000:1 dynamic contrast ratio and covers 98.5% of the DCI-P3 color gamut (CIE 1976), ensuring rich, accurate colors ideal for both gaming and content consumption. With a brightness of 275 cd/m² and wide 178° viewing angles horizontally and vertically, the screen remains clear and consistent from any position.
Connectivity is robust, featuring two HDMI ports, one DisplayPort, and a USB Type-C port for versatile device compatibility, alongside three USB ports (including two USB 2.0 downstream) and an RJ-45 Ethernet port for network connectivity. The monitor includes built-in 2W speakers and Bluetooth support for audio flexibility, and it runs on webOS, providing access to streaming services like Netflix, Amazon Prime, Disney+, Apple TV, and YouTube without an external device.
Key Product Advantages
This monitor stands out with its combination of OLED technology, high refresh rate, and gaming-focused features, making it a top choice for serious gamers and enthusiasts. The OLED panel provides superior image quality with perfect black levels and rapid pixel response, while the 240Hz refresh rate ensures smooth, fluid motion in competitive games. Additional advantages include comprehensive adaptive sync support, an adjustable stand for ergonomic comfort, and built-in smart TV functionality via webOS.
OLED Visual Excellence
The OLED display delivers infinite contrast, perfect blacks, and vibrant colors with 98.5% DCI-P3 coverage, enhancing both gaming and multimedia experiences.
- 1,500,000:1 contrast ratio
- HDR10 and DisplayHDR True Black 400
- Wide 178° viewing angles
High-Performance Gaming
With a 240Hz refresh rate and 0.03ms response time, the monitor minimizes input lag and motion blur, supported by NVIDIA G-SYNC and AMD FreeSync Premium for tear-free gameplay.
- Adaptive sync compatibility
- Built-in gaming utilities (crosshair, FPS counter)
- Low blue light and anti-glare coating
Smart Connectivity
webOS provides direct access to popular streaming apps, while multiple ports including USB Type-C, HDMI, and DisplayPort offer flexible connectivity for PCs, consoles, and peripherals.
- Built-in USB hub
- Bluetooth and Ethernet support
- Streaming services pre-loaded
Deployment / Use Cases
The LG UltraGear 45GX90SA-B is ideal for gaming setups where immersion and performance are critical. Its ultra-wide curved screen and high refresh rate make it perfect for first-person shooters, racing simulators, and open-world games, providing a competitive edge and engaging experience. The monitor also suits content creators and multimedia users who benefit from OLED color accuracy and HDR support for video editing or streaming.
In home office or entertainment environments, the webOS platform allows for casual streaming of movies and shows without additional hardware, while the adjustable stand and VESA mount compatibility enable flexible placement on desks or walls. The built-in speakers and connectivity options make it a versatile centerpiece for hybrid work-and-play setups.
Competitive Gaming
Optimized for esports and fast-paced titles with 240Hz refresh, low response time, and adaptive sync to maintain smooth, responsive gameplay.
Immersive Entertainment
The curved OLED screen and HDR support enhance movies and streaming content, with webOS providing direct access to platforms like Netflix and Disney+.
Physical Profile
The monitor features a sleek black design with a curved screen and a space-saving L-shaped stand. It measures 39.08" wide, 17.99" high, and 8.58" deep without the stand, and 39.08" wide, 26.05" high, and 13.33" deep with the stand installed. The stand offers height adjustment from 21.33" to 26.05", along with swivel and tilt capabilities for ergonomic positioning. Weighing 19.62 lb without the stand and 29.76 lb with it, the monitor is VESA mount compatible (100x100 mm) for alternative mounting solutions.
- 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 UW-QHD 3440x1440 resolution
- 240Hz refresh rate and 0.03ms response time for smooth gaming
- OLED panel with perfect blacks, 1,500,000:1 contrast, and 98.5% DCI-P3 color
- HDR10 and VESA DisplayHDR True Black 400 certification
- NVIDIA G-SYNC Compatible and AMD FreeSync Premium support
- Adjustable stand with height, swivel, and tilt adjustments
- webOS smart TV platform with streaming app access
- Multiple connectivity options: 2x HDMI, DisplayPort, USB Type-C, USB hub
- Built-in speakers and Bluetooth for audio flexibility
- VESA mount compatible and black finish
Specifications
| Specifications | |
|---|---|
| Manufacturer | LG Electronics |
| Manufacturer Part Number | 45GX90SA-B |
| Brand Name | LG |
| Product Line | UltraGear |
| Product Model | 45GX90SA-B |
| Product Name | UltraGear 45GX90SA-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 | 1 ms GTG,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° |
| Features | HDR10,VESA DisplayHDR True Black 400,Color Calibration,Auto Brightness Control (ABC),Black Stabilizer Technology,Dynamic Action Sync,Crosshair,FPS Counter,Smart Energy Saving,Picture by Picture,Picture in Picture,Eye Comfort Technology,Anti-glare,Low Blue Light,NVIDIA G-SYNC |
| Curved Screen | Yes |
| Adjustable Stand | Yes |
| Stand Adjustments | Swivel,Height,Tilt |
| Streaming Service | Netflix,Amazon Prime,Disney+,Apple TV,YouTube |
| Video | |
| Maximum Resolution | 3440 x 1440 |
| Standard Refresh Rate | 240 Hz |
| Dynamic Contrast Ratio | 1,500,000:1 |
| Brightness | 275 cd/m² |
| Tearing Prevention Technology | Adaptive Sync/FreeSync Premium/G-sync Compatible |
| Color Gamut | 94% DCI-P3 (CIE 1976),98.5% DCI-P3 (CIE 1976) |
| Audio | |
| Number of Speakers | 2 |
| Speakers | Yes |
| Network & Communication | |
| Bluetooth | Yes |
| Interfaces/Ports | |
| Network (RJ-45) | Yes |
| HDMI | Yes |
| USB | Yes |
| VGA | No |
| DisplayPort | Yes |
| Thunderbolt | No |
| USB Type-C | Yes |
| Total Number of HDMI Ports | 2 |
| Number of DisplayPorts | 1 |
| Number of USB Ports | 3 |
| Number of USB 2.0 Ports | 2 |
| Number of USB 2.0 Downstream Ports | 2 |
| Total Number of USB Type-C Ports | 1 |
| DVI-D | No |
| Built-in Devices | |
| Built-in Devices | USB Hub |
| Webcam | No |
| Microphone | No |
| Software | |
| Operating System Supported | WebOS |
| Power Description | |
| Energy Efficiency Class (SDR) (from 1st March 2021) | F |
| Energy Efficiency Class (HDR) (from 1st March 2021) | G |
| ON Mode Energy Consumption per 1000Hour (SDR) (from 1st March 2021) | 46 kW |
| ON Mode Energy Consumption per 1000Hour (HDR) (from 1st March 2021) | 53 kW |
| Physical Characteristics | |
| VESA Mount Compatible | Yes |
| Color Family | Black |
| Product Color | Black |
| 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 |
User Manual
FAQ
What is the screen size and resolution of this monitor?
The LG UltraGear 45GX90SA-B features a 45-inch class curved OLED display with a 44.5-inch viewable area and an ultra-wide UW-QHD resolution of 3440 x 1440 pixels. This 21:9 aspect ratio provides an expansive field of view ideal for gaming and multimedia, offering sharp details and immersive visuals without the need for multi-monitor setups.
Does this monitor support high refresh rates for gaming?
Yes, this monitor has a 240Hz refresh rate combined with a 0.03ms gray-to-gray response time, making it excellent for fast-paced gaming. It reduces motion blur and input lag, and supports adaptive sync technologies including NVIDIA G-SYNC Compatible and AMD FreeSync Premium to eliminate screen tearing and stuttering for smooth gameplay.
What HDR standards does this monitor support?
The monitor supports HDR10 and is VESA DisplayHDR True Black 400 certified. This ensures enhanced dynamic range with deeper blacks and brighter highlights, leveraging the OLED panel's high contrast ratio of 1,500,000:1 for more vivid and realistic visuals in supported games and content.
What connectivity options are available?
Connectivity includes two HDMI ports, one DisplayPort, one USB Type-C port, three USB ports (with two USB 2.0 downstream), an RJ-45 Ethernet port, and Bluetooth. The built-in USB hub allows for peripheral connections, and the webOS platform enables smart features and streaming without external devices.
Is the stand adjustable?
Yes, the included stand offers height adjustment from 21.33 inches to 26.05 inches, along with swivel and tilt capabilities for ergonomic positioning. The monitor is also VESA mount compatible (100x100 mm) if you prefer wall or arm mounting for a customized setup.
What is webOS and how does it enhance the monitor?
webOS is a built-in smart TV operating system that provides direct access to streaming services like Netflix, Amazon Prime, Disney+, Apple TV, and YouTube without needing a separate streaming device. It adds convenience for entertainment use, allowing you to switch between gaming and media consumption seamlessly on the same display.
| Qty | Price | Available |
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