LG UltraGear OLED 45GX90SA-B 45"

Manufacturer: LG

The LG UltraGear OLED 45GX90SA-B is a 45-inch curved ultrawide monitor aimed at gaming use, combining a large-format screen with a panel technology known for deep contrast and fast pixel response. Its OLED display delivers a native contrast ratio of 1,500,000:1 alongside support for over a billion colors, making it a technically distinctive option in the gaming monitor category. The matte anti-glare coating and 178-degree viewing angles in both directions round out a display designed with versatility in mind.

Running at 240Hz with a 0.03ms response time, the panel supports a broad range of adaptive sync standards including VESA Adaptive Sync, Nvidia G-Sync, and AMD FreeSync Premium. Connectivity includes two HDMI 2.1 ports, one DisplayPort 1.4 output, USB Type-C, two USB ports, and a 3.5mm audio jack, while Wi-Fi and AirPlay are also built in. The monitor features stereo speakers, a picture-in-picture mode, and an integrated smart TV platform, with the stand offering tilt, swivel, and portrait mode orientation. Operating power consumption is rated at 92W, and the unit weighs approximately 13.5kg with overall dimensions of 993 x 457 x 218mm.

Pros

The OLED panel delivers an exceptionally high contrast ratio of 1,500,000:1, producing deep blacks and vivid image depth
A 240Hz refresh rate combined with a 0.03ms response time makes the display well-suited for fast-paced content
Adaptive sync support spans VESA Adaptive Sync, Nvidia G-Sync, Nvidia G-Sync Compatible, AMD FreeSync, and AMD FreeSync Premium, covering a wide range of GPU configurations
The stand supports tilt, swivel, and portrait mode, offering meaningful ergonomic flexibility for different desk setups
Built-in Wi-Fi and AirPlay add wireless connectivity options beyond the standard wired ports
The inclusion of a smart TV platform and stereo speakers means the monitor can function as a standalone entertainment screen without additional devices

Cons

At 275 nits of typical brightness, the panel is relatively dim compared to what some OLED displays in this size range can achieve
The EU energy label of F indicates relatively high energy consumption for everyday use
No remote control is included despite the built-in smart TV functionality, which may affect usability in non-desk scenarios
Ethernet connectivity is not supported, so network-dependent smart features rely entirely on Wi-Fi
There is no ambient light sensor to automatically adjust brightness based on room conditions
Dolby Digital, Dolby Digital Plus, and DTS Surround are all absent, limiting the audio experience from the built-in speakers

Who is this for?

This monitor is well-matched to users who spend significant time on fast-paced games, given its 240Hz refresh rate and 0.03ms response time alongside broad adaptive sync support spanning both Nvidia and AMD ecosystems. The ultrawide curved format and smart TV platform also make it a practical fit for those who want a single large-screen setup that handles both gaming and media consumption, especially with built-in Wi-Fi and AirPlay enabling wireless streaming without extra hardware. Users who value ergonomic flexibility will appreciate the stand's tilt, swivel, and portrait mode support, along with VESA mount compatibility for those who prefer an arm-based configuration.

Who is this NOT for?

Users who require a bright display for well-lit or high-ambient-light environments may find the 275-nit typical brightness insufficient for comfortable viewing. The absence of Ethernet means those who rely on a stable wired connection for smart features will be limited to Wi-Fi only, making this a poor fit for setups where wired network reliability is a priority. Additionally, the EU energy label of F and a relatively large physical footprint — nearly a metre wide and weighing over 13 kg — make this unsuitable for compact desk setups or users seeking an energy-efficient display for extended daily use.

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 display uses OLED/AMOLED panel technology across a 44.5″ screen, delivering a resolution of 3440 x 1440 px at 83 ppi in an ultrawide format. The panel operates at a 240Hz refresh rate with a 0.03ms response time, and supports an extensive range of adaptive sync standards including VESA Adaptive Sync, Nvidia G-Sync, Nvidia G-Sync Compatible, AMD FreeSync, and AMD FreeSync Premium. Both horizontal and vertical viewing angles reach 178 degrees, while the matte, anti-glare surface helps reduce reflections — the panel is not glossy and does not support touch input.

General info:

Type	Ultrawide, Gaming, Curved
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

This is an ultrawide curved gaming monitor with an EU energy label of F, measuring 993 x 457 x 218 mm and weighing approximately 13.5 kg. The stand supports tilt, swivel, and portrait mode orientation, and the monitor is also compatible with VESA mounting solutions. Its volume is rated at 98,928.618 cm³.

Colors:

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

The display has a typical brightness of 275 nits and a contrast ratio of 1,500,000:1, with the ability to render up to 1,070 million colors. Color calibration is also supported, allowing for adjustments to color accuracy.

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 monitor offers a well-rounded set of ports, including two HDMI 2.1 inputs, one DisplayPort 1.4 output, a USB Type-C port, and two standard USB ports, along with a 3.5mm headset jack. There are no mini DisplayPort, DVI, or VGA connectors, and Thunderbolt is not supported. On the wireless side, the monitor includes both Wi-Fi and AirPlay, though wired Ethernet connectivity is not available.

Power:

operating power consumption	92W
standby power consumption	0.5W

The monitor draws 92W during normal operation and drops to a standby power consumption of 0.5W 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 monitor includes built-in stereo speakers and a smart TV platform, along with picture-in-picture (PiP) support for viewing multiple sources simultaneously. It does not come with a remote control, nor does it support Dolby Digital, Dolby Digital Plus, or DTS Surround audio formats. An ambient light sensor and a front camera are also absent.

Final Verdict

The LG UltraGear OLED 45GX90SA-B positions itself as a large-format ultrawide display built around the strengths of OLED panel technology, and its specifications largely deliver on that premise. The combination of a 240Hz refresh rate, 0.03ms response time, and a 1,500,000:1 contrast ratio makes it a technically capable option for gaming-focused setups, while the built-in smart TV platform, Wi-Fi, and AirPlay extend its usefulness beyond the desktop. That said, the modest 275-nit brightness, lack of Ethernet, and considerable physical size mean it suits a specific type of user rather than a broad audience. For those whose setup and usage align with what this monitor offers, the LG 45GX90SA-B represents a well-specified, feature-rich screen with a clear identity — one that rewards the right environment rather than trying to be all things to all users.

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