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LG UltraGear OLED 45GX90SA-B 45" specifications and in-depth review

LG UltraGear OLED 45GX90SA-B 45"

Manufacturer: LG

The LG UltraGear OLED 45GX90SA-B 45″ is an ultrawide gaming monitor designed for high-performance gaming. It features a 3440 x 1440 px resolution and an OLED display that delivers crisp visuals and a smooth viewing experience.

For an immersive experience, this model boasts a 240Hz refresh rate and supports multiple adaptive sync technologies, including Nvidia G-Sync and AMD FreeSync. The monitor has a matte panel to reduce glare, supports VESA mounting, and comes with a range of connectivity options such as HDMI 2.1 and USB Type-C ports.

Pros
  • Supports multiple adaptive synchronization technologies including VESA Adaptive Sync, Nvidia G-Sync, and AMD FreeSync, improving gaming performance.
  • Features a 240Hz refresh rate and 0.03 ms response time, providing ultra-smooth and fast performance for competitive gaming.
  • Equipped with 2 HDMI ports and USB Type-C, offering versatile connectivity options for modern devices.
  • The large 44.5-inch ultrawide display enhances the gaming and viewing experience with a more immersive field of view.
  • Supports color calibration and displays 1070 million colors, ensuring accurate and vibrant color reproduction.
Cons
  • The monitor has a F energy rating, which may be less energy-efficient compared to other models.
  • Lacks built-in support for Dolby Digital, Dolby Digital Plus, and DTS Surround, limiting the audio capabilities for immersive sound.
  • Does not include a remote control, which might reduce convenience for controlling smart TV functions.
  • The monitor does not support Thunderbolt, limiting high-speed data transfer options for compatible devices.
  • No ambient light sensor for automatic adjustment of brightness based on the environment.
Who is this for?

The LG UltraGear OLED 45GX90SA-B 45″ is ideal for gamers who demand high performance and immersive visuals. With its 240Hz refresh rate and 0.03 ms response time, it is well-suited for fast-paced, competitive gaming, offering a smooth, lag-free experience. The ultrawide, curved display also enhances gameplay by providing an expansive field of view, while support for multiple adaptive sync technologies ensures a tear-free, smooth visual experience. Additionally, its color calibration support and high color accuracy make it a great choice for those who engage in content creation or color-critical tasks.

Who is this NOT for?

This monitor may not be suitable for users looking for an energy-efficient or low-maintenance option, as it has a F energy rating and lacks an ambient light sensor for automatic brightness adjustment. The lack of Dolby Digital or DTS Surround support means it may not provide the best audio experience for those seeking immersive sound. It is also not ideal for users who require Thunderbolt connectivity or a remote control for managing smart TV functions.

Display:

Display type OLED/AMOLED
response time 0.03 ms
screen size 44.5"
resolution 3440 x 1440 px
pixel density 83 ppi
Adaptive synchronization VESA Adaptive Sync, Nvidia G-Sync Compatible, Nvidia G-Sync, AMD FreeSync, AMD FreeSync Premium
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 45GX90SA-B 45″ features a stunning OLED/AMOLED display with a 3440 x 1440 px resolution, offering clear and vibrant visuals. The screen size is 44.5 inches, with a pixel density of 83 ppi, ensuring sharp details across the ultrawide view. It also supports a 240Hz refresh rate for smooth gameplay and a fast 0.03 ms response time. The monitor offers a wide 178º horizontal and vertical viewing angle and comes with a matte panel to reduce glare, making it suitable for various lighting environments.

General info:

Type Ultrawide, Gaming, Curved
release date May 2025
EU energy label F
supports total tilt ✓
Has a swivel stand ✓
Supports VESA mount ✓
height 457 mm
width 993 mm
thickness 218 mm
weight 13517 g
supports portrait mode ✓
volume 98928.618 cm³

The LG UltraGear OLED 45GX90SA-B 45″ is a large, ultrawide, gaming, curved monitor designed for flexibility and comfort. It supports total tilt and comes with a swivel stand, allowing users to adjust its position easily. The monitor also supports VESA mounting for more installation options and can be used in portrait mode. With a height of 457 mm, width of 993 mm, and a thickness of 218 mm, it weighs 13517 g, making it a solid, sturdy piece of equipment with a volume of 98928.618 cm³.

Colors:

brightness (typical) 275 nits
supports color calibration ✓
display colors 1070 million
contrast ratio 1500000:1

The LG UltraGear OLED 45GX90SA-B 45″ delivers vivid color performance with a typical brightness of 275 nits and a contrast ratio of 1500000:1, ensuring sharp and dynamic visuals. It supports color calibration for precise color accuracy, and is capable of displaying 1070 million colors, making it suitable for both gaming and content creation where color detail is essential.

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 2
Has USB Type-C ✓
HDMI version HDMI 2.1
supports Ethernet ✕
supports Wi-Fi ✓
has AirPlay ✓
mini DisplayPort outputs 0
has a VGA connector ✕

The LG UltraGear OLED 45GX90SA-B 45″ offers versatile connectivity with 2 HDMI ports supporting HDMI 2.1, and a DisplayPort 1.4 output. It also includes USB Type-C and 2 standard USB ports for additional device connection. For audio, it has a 3.5mm headphone jack, and it supports Wi-Fi for wireless connectivity, as well as AirPlay for seamless streaming.

Power:

operating power consumption 92W
standby power consumption 0.5W

The LG UltraGear OLED 45GX90SA-B 45″ has a operating power consumption of 92W, ensuring efficient energy usage during regular use. When in standby mode, it consumes just 0.5W, making it energy-efficient even when not in active use.

Features:

has PiP ✓
has stereo speakers ✓
has built-in smart TV ✓
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 45GX90SA-B 45″ comes with several notable features, including PiP (Picture-in-Picture) support for multitasking, and stereo speakers for built-in audio. It also has a built-in smart TV feature, allowing for streaming and entertainment without the need for external devices. However, it does not include a remote control, Dolby Digital or DTS Surround support, or an ambient light sensor.

Final Verdict

The LG UltraGear OLED 45GX90SA-B 45″ is a powerful monitor designed for high-performance gaming and content creation. Its 240Hz refresh rate and 0.03 ms response time make it a top choice for gamers seeking smooth, responsive gameplay. The ultrawide OLED display with vivid color reproduction further enhances the viewing experience. While it excels in performance and visual quality, it may not be the best fit for users seeking energy efficiency or advanced audio features. Overall, this monitor is ideal for serious gamers and professionals who prioritize top-tier visual fidelity and responsiveness.