LG UltraGear OLED 45GX900A-B

Name: LG UltraGear OLED 45GX900A-B
Brand: LG
SKU: 969790
Price: 1549 EUR
Availability: InStock
Rating: 8.8 (11 reviews)

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45 inches - Wide QXGA - 240Hz - OLED - Curved

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Insurance
Specifications

Product information

Key specs

	Sharpness	WQXGA
	Curved
	Aspect ratio	Ultrawide (21:9)
	Refresh rate	240 Hz
	Response time	0,03 ms
	Panel type	OLED
	Color depth	1 billion colors (10-bit)
	Built-in speakers

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Pros and cons

According to our monitor expert

Enjoy sharp images and more screen space thanks to the WQXGA resolution.
See more of the playing field or use multiple windows at the same time on the wide ultrawide screen.
With a 240Hz refresh rate, you can play fast-paced games smoothly, which makes the monitor suitable for professional gaming.
An ultrawide monitor takes up a lot of space, so your desk needs to be large enough.
To get the maximum refresh rate of 240 hertz, you can connect the monitor with DisplayPort.

Description

See more of your game world and screen space with the LG UltraGear OLED 45GX900A-B. This monitor has a WQXGA resolution, so you’ll see more pixels and details than with Quad HD. Thanks to the ultrawide 21:9 aspect ratio, you can see more of your surroundings and open more windows side by side. The 240Hz refresh rate makes sure you don’t see any stuttering while you’re gaming.

Tips for using this product

This is what you get

Manual(4.55 MB)
Power cord
Monitor base
HDMI cable
DisplayPort cable
USB-C cable

Reviews

Rating

5 stars

4 stars

3 stars

2 stars

1 star

Most helpful reviews

Review is 10 out of 10.

An immersive monitor that forgets the 16:9 aspect ratio!

Excellent HDR color reproduction
Big screen!
Gaming at 165 hertz or lower resolution at 330 hertz
Both sides of the monitor dim slightly than the center

I've been searching for a really good ultrawide monitor for a long time. I always had an eye for LG ultrawide monitors, but the pixel density and resolution issues with previous models held me back. This monitor has definitely taken a step up in terms of pixel density (50% more than previous models) and 5120 x 2160 resolution. 45 inches is really quite large, so make sure your desk has enough space. HDR color reproduction is truly excellent! SDR isn't too bad in terms of color; some colors weren't quite as accurate, but using the Nvidia app to convert SDR videos to HDR content, the colors are reasonably accurate. The dual mode has eight different modes you can set, including the lower resolution (2560 x 1080) for gaming at 330 Hz. For 5120 x 2160 gaming at 165 Hz, you'll need a powerful graphics card with at least 16 GB of VRAM. If you have a slightly lower resolution, you can game at 3440 x 1440, but the 165Hz setting remains the same.

I also noticed that both sides of the monitor dim slightly more than the center, especially the HUD layout. This isn't a bug, but normal. It's not excessive, as most of the screen is visible from the center. It does brighten up at certain times. This is my first OLED monitor, so I'm not sure if others have the same issue, but after extended use, the monitor automatically performs an image cleanup to prevent burn-in when the PC shuts down.

Review by:
Xavier
Date:
8 September 2025
Translation:
Automatically translated from Dutch

Review is 8,4 out of 10.

Top monitor for mixed programming/gaming

Nice big monitor with lots of surface area
Fast refresh rate
Fantastic image
No KVM built-in is still a drawback

Yes, fantastic monitor that is extremely suitable for both programming and gaming.

Review by:
Jody
Date:
3 November 2025
Translation:
Automatically translated from Dutch

Review is 6,0 out of 10.

Extremely curved

Big
Beautiful OLED contrast in image
Power supply is large and heavy

I don't like it because it's more at home on the cockpit of the USS Enterprise than on my desk

Review by:
Alex
Date:
10 September 2025
Translation:
Automatically translated from Dutch

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Refresh rate
- 240 Hz
- 240 Hz
- 330 Hz
- 240 Hz
Sharpness
- WQXGA
- 4K (UHD)
- WUXGA
- Quad HD (1440p)
Panel type
- OLED
- VA panel
- OLED
- OLED
Response time
- 0,03 ms
- 1 ms
- 0,03 ms
- 0,03 ms

Show full comparison

Insure your monitor

Receive more coverage in case of damage than with your standard warranty. Coolblue takes care of everything: from taking out the insurance to repairs. Is a repair not possible? You receive the purchase price as CoolblueCredit.

What am I insured for?

Fall and impact damage
Water damage
Manufacturing defects outside the warranty

What am I not insured for?

Damage you deliberately cause
Damage that doesn't affect the product functioning (such as scratches)
Damage due to gross negligence

XCover insurace

XCover is allowed to arrange and process insurances on behalf of the insurer. The insurances are governed by Belgium law. If you have a complaint, you can contact the or our customer service.

How do I insure my monitor?

First, add your monitor to your shopping cart. On the next page, choose the Protection Plan below. You always have a 30-day return window and pay no deductible in case of damage.

XCover Protection without theft cover

5-year advance payment
556,- one-time payment (111,20 per year)
3-year advance payment
310,- one-time payment (103,33 per year)

The insurance can be canceled every year, even if you have paid in advance. If you cancel earlier, you will receive a refund for the overpaid amount.

Specifications

Product

Product
	Product number	969790
	Manufacturer code	45GX900A-B.AEU
	Brand	LG
	Warranty	2 years
	Processing of your defect	Via Coolblue

Screen

Screen
	Recommended display resolution	3440x1440
	Sharpness	WQXGA
	Aspect ratio	Ultrawide (21:9)
	Refresh rate	240 Hz
	Response time	0,03 ms
	Panel type	OLED
	Brightness	275 cd/m2
	Local dimming
	HDR support
	Contrast ratio	1500000
	Touchscreen
	Type of HDR	DisplayHDR 400 True Black, HDR10
	Screen reflection	Anti-glare
	Blue light filter
	Flicker-free technology
	Color space	DCI-P3
	Color depth	1 billion colors (10-bit)
	Adaptive Sync
	Type of adaptive sync	Freesync Premium Pro, G-Sync Compatible
	Resolution width	3440 pixels
	Resolution height	1440 pixels
	Anti-reflection type	Anti glare
	Horizontal viewing angle	178 °

Physical properties

Physical properties
	Height	66,17 cm
	Width	99,27 cm
	Depth	33,86 cm
	Weight	13,5 kg
	Color	Black
	Including stand
	Material	Plastic
	Cable management
	Appearance	Business, Neutral
	Curved
	Screen curve	800 R

Connectors and connections

Connectors and connections
	Number of HDMI connectors	2
	Number of Female HDMI type A 2.1 ports	2
	Number of USB-C ports	1
	Number of Female Standard DisplayPort 1.4 ports	1
	Number of female standard USB-A ports	2
	Female standard USB-A port version	3.0
	Type of USB port	Standard USB-A, USB-C
	Number of USB ports	3
	Suitable for daisy chaining
	Maximum USB-C dock power	65 W

Included

Included
	Included by default	DisplayPort cable, HDMI cable, USB-C cable

Adjustability

Adjustability
	Adjustable in height
	Tiltable
	Pivotable stand
	Pivot function
	VESA mount option
	VESA mount	100x100mm

Energy consumption

Energy consumption
	Energy label	F
	Energy consumption standby	0,5 W
	Energy consumption active	41 W
	Energy consumption per 1000h	41 kWh
	Annual energy consumption	59,86 kWh
	Annual energy costs	23,94 euros

Other properties

Other properties
	Built-in speakers
	Sound system	Stereo
	Webcam
	Split screen
	Kensington lock

Quality properties

Quality properties
	Recommended for use	Gaming, Internet, email, and text processing, Watching movies in Full HD

This is the one

LG UltraGear OLED 45GX900A-B

Review is 8,8 out of 10, based on 11 reviews.

anything for a smile

Ordered before 23:59, delivered tomorrow for free

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LG UltraGear OLED 45GX900A-B