LG UltraGear OLED 45GX900A-B 45" specifications and in-depth review

LG UltraGear OLED 45GX900A-B 45"

Manufacturer: LG

The LG UltraGear OLED 45GX900A-B 45″ is a gaming-focused, ultrawide monitor designed for an immersive visual experience. Featuring an OLED display, it delivers crisp visuals and a high refresh rate. Its 240Hz refresh rate ensures smooth motion during fast-paced gaming.

This monitor boasts a resolution of 3440 x 1440 px, offering ample screen real estate and sharp clarity. It supports both AMD FreeSync Premium Pro and Nvidia G-Sync for tear-free gaming. Other key features include anti-glare coating, a matte panel, and multiple connectivity options, including 2 HDMI ports and USB Type-C.

Pros
  • Supports AMD FreeSync Premium Pro and Nvidia G-Sync for smooth, tear-free gaming.
  • Offers a 240Hz refresh rate and 0.03 ms response time for fluid, fast-paced gameplay.
  • Has a matte panel with anti-glare coating, reducing reflections and improving visibility in bright environments.
  • Supports PiP (Picture-in-Picture) for multitasking with multiple video sources.
  • Has flexible ergonomics with total tilt and swivel stand, as well as portrait mode support.
Cons
  • No built-in smart TV functionality or remote control for easier media navigation.
  • Lacks support for advanced audio technologies like Dolby Digital and DTS Surround.
  • Does not support Ethernet or Wi-Fi connectivity, limiting network options.
  • Relatively large and heavy, with a weight of 13.5 kg, making it less portable.
Who is this for?

This monitor is ideal for gamers and content creators who need a high-performance display. With a 240Hz refresh rate and a 0.03 ms response time, it excels in fast-paced gaming, offering smooth visuals with minimal motion blur. Its OLED/AMOLED display provides vibrant colors and deep blacks, making it perfect for immersive gaming sessions or editing high-quality visuals. Additionally, the flexible ergonomics, including tilt and swivel stand support, make it adaptable to various workspaces and gaming setups.

Who is this NOT for?

This monitor may not be the best choice for users seeking a compact, lightweight, or easily portable solution. With a weight of 13.5 kg and relatively large dimensions, it is less suitable for those with limited desk space or who need a mobile setup. Additionally, the lack of Ethernet or Wi-Fi connectivity, combined with no built-in smart TV functionality, limits its use in network-intensive applications or casual media consumption setups.

Display:

Display type OLED/AMOLED
response time 0.03 ms
screen size 45"
resolution 3440 x 1440 px
pixel density 82 ppi
Adaptive synchronization AMD FreeSync Premium Pro, Nvidia G-Sync Compatible
has anti-glare coating
refresh rate 240Hz
maximum horizontal viewing angle 178º
maximum vertical viewing angle 178º
has a matte panel
has a glossy panel
has a touch screen

The LG UltraGear OLED 45GX900A-B 45″ offers an OLED/AMOLED display that delivers vibrant colors and deep blacks. With a 240Hz refresh rate and a lightning-fast 0.03 ms response time, it ensures smooth and responsive gameplay. The monitor features a 3440 x 1440 px resolution and an 82 ppi pixel density for sharp and clear visuals. It also supports adaptive synchronization technologies such as AMD FreeSync Premium Pro and Nvidia G-Sync for tear-free gaming. The display's 178º viewing angles ensure consistent image quality from nearly any position, while the anti-glare coating and matte panel reduce reflections for a better viewing experience.

General info:

Type Gaming, Curved, Ultrawide
release date June 2025
EU energy label F
supports total tilt
Has a swivel stand
Supports VESA mount
height 457 mm
width 992 mm
thickness 218 mm
weight 13500 g
supports portrait mode
volume 98828.992 cm³

The LG UltraGear OLED 45GX900A-B 45″ is a gaming-focused, ultrawide, and curved monitor. It supports total tilt and has a swivel stand for flexible positioning, while also being compatible with VESA mounts. The monitor's dimensions are 457 mm in height, 992 mm in width, and 218 mm in thickness, with a weight of 13.5 kg. It can also be rotated into portrait mode for different viewing setups. The monitor has an energy label of F and a total volume of 98,828.992 cm³, making it suitable for various gaming and work environments.

Colors:

brightness (typical) 250 nits
supports color calibration
bit depth 10-bit
contrast ratio 1500000:1

The LG UltraGear OLED 45GX900A-B 45″ offers vibrant color performance with a typical brightness of 250 nits. It supports color calibration for accurate color reproduction and features a 10-bit color depth for smoother gradients. The monitor also boasts an impressive contrast ratio of 1,500,000:1, enhancing dark and light image details for a more immersive viewing experience.

Connectivity:

HDMI ports 2
supports Thunderbolt
DisplayPort outputs 1
DisplayPort version DisplayPort 1.4
has a socket for a 3.5 mm audio jack
has a DVI connector
USB ports 3
USB version 3
Has USB Type-C
supports Ethernet
supports Wi-Fi
has AirPlay
mini DisplayPort outputs 0
has a VGA connector

The LG UltraGear OLED 45GX900A-B 45″ offers a variety of connectivity options, including 2 HDMI ports and 1 DisplayPort output with DisplayPort 1.4 support. It also includes a USB Type-C port, along with 3 USB 3.0 ports for versatile device connections. For audio, the monitor features a 3.5mm audio jack for headset use, but it does not support Thunderbolt, Ethernet, or Wi-Fi connectivity.

Power:

standby power consumption 0.5W

The LG UltraGear OLED 45GX900A-B 45″ has a low standby power consumption of just 0.5W, ensuring minimal energy usage when not in active use.

Features:

has PiP
has stereo speakers
has built-in smart TV
audio output power 2 x 7W
has a remote control
supports Dolby Digital
supports Dolby Digital Plus
has DTS Surround
has an ambient light sensor
has a front camera

The LG UltraGear OLED 45GX900A-B 45″ includes several useful features for enhanced user experience. It supports PiP (Picture-in-Picture) functionality, allowing you to multitask with multiple video sources. The monitor also comes with built-in stereo speakers that provide 2 x 7W audio output power for decent sound quality. However, it does not include features such as a built-in smart TV, remote control, or support for Dolby Digital or DTS Surround audio technologies.

Final Verdict

The LG UltraGear OLED 45GX900A-B 45″ is a high-performance gaming monitor designed for users who prioritize fast, responsive gameplay. With its 240Hz refresh rate and 0.03 ms response time, it excels in delivering smooth visuals for competitive gaming. The OLED/AMOLED display ensures vibrant colors and deep contrasts, while its ergonomic design, including tilt, swivel, and portrait mode support, adds flexibility to its use. While its size and weight may not suit those looking for portability, it is a strong choice for dedicated gamers and content creators who need top-tier visual performance and customization options.