LG UltraGear 45GX90SA-B 45" Curved OLED Gaming Monitor

Immersive UltraWide OLED Gaming

Experience gaming on a whole new scale with the LG UltraGear 45GX90SA-B, a premium 45-inch-class curved OLED gaming monitor designed for immersive gameplay, fast performance and versatile entertainment.

With its expansive 21:9 UltraWide display, 3440 × 1440 WQHD resolution, 240Hz refresh rate, 0.03ms response time and dramatic 800R curvature, the 45GX90SA-B puts you closer to the action while delivering the speed and responsiveness demanded by competitive gaming.

Its OLED technology produces deep blacks, vivid colours and exceptional contrast, while built-in smart features make it equally suited to streaming, browsing and everyday entertainment.

45" UltraWide OLED Display

The large 44.5-inch OLED panel provides an expansive viewing area with a 21:9 aspect ratio. The UltraWide format gives you significantly more horizontal screen space than a conventional 16:9 monitor, making games feel more immersive and providing additional room for multitasking.

The 3440 × 1440 WQHD resolution delivers sharp, detailed images while offering a sensible balance between visual quality and the high frame rates required to take advantage of the 240Hz refresh rate.

OLED technology provides individually controlled pixels, allowing the monitor to produce extremely deep blacks alongside bright, vibrant colours. This creates excellent contrast and helps dark scenes retain detail and atmosphere.

240Hz Refresh Rate

Designed for fast-paced gaming, the 240Hz refresh rate allows the display to update the image up to 240 times per second.

When paired with hardware capable of producing high frame rates, this results in exceptionally smooth motion. Fast camera movements, racing games, competitive shooters and other action-heavy titles benefit from the monitor's high refresh rate.

Ultra-Fast 0.03ms Response Time

With an advertised 0.03ms response time, the OLED panel is engineered for extremely rapid pixel transitions.

The fast response helps minimise ghosting and motion blur, allowing moving objects to remain clearer during fast gameplay.

Combined with the 240Hz refresh rate, this makes the 45GX90SA-B particularly well suited to competitive and performance-focused gaming.

Immersive 800R Curvature

The monitor's 800R curvature wraps the large display around your field of view, creating a more immersive gaming experience.

The curved design helps bring the edges of the UltraWide screen closer to your natural viewing position. This is especially effective for racing games, flight simulators, RPGs and cinematic titles where immersion is a priority.

Rich OLED Colour and HDR

The OLED panel delivers rich colours, deep blacks and an impressive level of contrast.

The monitor supports DisplayHDR True Black 400 and offers a DCI-P3 colour gamut of up to 98.5%, helping compatible HDR games and content appear vibrant and detailed.

LG also specifies a high typical contrast ratio of 1,500,000:1, allowing the monitor to produce a strong distinction between bright and dark areas.

AMD FreeSync Premium and NVIDIA G-SYNC Compatible

The 45GX90SA-B supports AMD FreeSync Premium, NVIDIA G-SYNC Compatible and VESA AdaptiveSync technologies.

These adaptive-sync technologies help synchronise the monitor's refresh rate with the graphics card's frame output. This can reduce screen tearing and stuttering, resulting in smoother gameplay.

Smart Entertainment with webOS

The 45GX90SA-B is more than a traditional PC gaming monitor.

Built-in webOS provides access to supported smart entertainment and streaming features directly through the monitor. This allows you to enjoy compatible content without always needing a computer connected.

The monitor also includes LG's Gaming Portal, providing convenient access to supported gaming and cloud-gaming services.

Availability of individual apps and services may vary depending on region and subscription.

USB-C Connectivity with 65W Power Delivery

A versatile USB-C connection makes the 45GX90SA-B particularly useful for modern laptops.

The USB-C port supports video, data and up to 65W Power Delivery, allowing compatible laptops to receive power while using the monitor as an external display.

This can help simplify your desk setup by reducing the number of cables required.

HDMI 2.1 and DisplayPort

The monitor provides a comprehensive range of connections for gaming PCs, laptops, consoles and peripherals.

Connectivity includes:

• 2 × HDMI 2.1
• 1 × DisplayPort 1.4
• 1 × USB-C with up to 65W Power Delivery
• 2 × USB 2.0 ports
• 1 × RJ-45 Ethernet port
• 1 × headphone output

HDMI 2.1 provides modern connectivity for compatible gaming hardware, while DisplayPort is ideal for high-performance PC gaming.

Integrated Speakers

The monitor features built-in 7W + 7W stereo speakers, providing convenient audio for gaming, streaming, video calls and general entertainment.

A headphone output is also available when you want a more private listening experience.

Ergonomic Design

Despite its large screen size, the 45GX90SA-B has been designed with a clean, modern UltraGear aesthetic.

The ergonomic stand provides:

• Height adjustment
• Tilt adjustment
• Swivel adjustment

The slim bezels help maximise the usable