LG 45GX900A-B computer monitor 113 cm (44.5") 3440 x 1440 pixels Wide Quad HD OLED Black

Manufacturer: LG Electronics | Model: 45GX900A-B.AEK | Product ID: 3991
£1437.05 (inc. VAT)
4 in stock
100% Money Back Guarantee - Risk Free

Product Technical Specification

Display
Display diagonal44.5
Display resolution3440 x 1440
HD typeWide Quad HD
Native aspect ratio21:9
Display technologyOLED
Panel typeOLED
TouchscreenNo
Display brightness (typical)275
Response time0.03
Response time measurement typeGTG (Gray to Gray)
Screen shapeCurved screen
Screen curvature rating800R
Contrast ratio (typical)1500000:1
Maximum refresh rate240
Viewing angle, horizontal178
Viewing angle, vertical178
Display number of colours1.07 billion colours
Pixel pitch0.303 x 0.303
Display diagonal (metric)113
High Dynamic Range (HDR) supportedYes
High Dynamic Range (HDR) technologyDisplayHDR 400 True Black,HDR Effect,High Dynamic Range 10 (HDR10)
Colour gamut standardDCI-P3
DCI-P3 coverage98.5
Performance
NVIDIA G-SYNCYes
AMD FreeSyncYes
AMD FreeSync typeFreeSync Premium Pro
Smart modesEnergy saving
Multimedia
Number of speakers2
RMS rated power14
Built-in speaker(s)Yes
Design
Market positioningGaming
Product colourBlack
Ports & interfaces
Built-in USB hubYes
USB Type-A downstream ports quantity2
USB Type-C downstream ports quantity1
USB Type-C DisplayPort Alternate ModeYes
USB Power Delivery (USB PD)Yes
USB Power Delivery up to65
HDMIYes
HDMI ports quantity2
DisplayPorts quantity1
DisplayPort version1.4
Headphone outYes
Ergonomics
VESA mountingYes
Panel mounting interface100 x 100
Height adjustmentYes
SwivellingYes
Tilt adjustmentYes
Picture-in-PictureYes
Power
Energy efficiency class (SDR)F
Energy efficiency class (HDR)E
Energy consumption (SDR) per 1000 hours41
Energy consumption (HDR) per 1000 hours39
Power consumption (off)0.3
AC input voltage100 - 240
AC input frequency50/60
Power supply typeExternal
Weight & dimensions
Width (with stand)992.7
Depth (with stand)338.6
Height (with stand)661.7
Weight (with stand)13500
Width (without stand)992.7
Depth (without stand)218
Height (without stand)457
Weight (without stand)8900
Packaging data
Package width1143
Package depth550
Package height301
Package weight18900
Other features
Brand specific technologiesBlack Stabilizer
FPS counterYes

Delivery Options

Economy Delivery
FREE
Economy Delivery

Economy Delivery (UK)

Estimated delivery date: Sun 07th Dec 2025 to Wed 10th Dec 2025
Business Express
£6.95
Business Express

Business Express

Estimated delivery date: Sat 06th Dec 2025 to Mon 08th Dec 2025
View all Delivery Options & International Rates
UltraWide view with deep black OLED
The 45-inch WQHD (3440x1440) display offers a 34% wider view than standard 16:9 screens, delivering sharp and clear visuals across the expansive display. This WQHD OLED represents boldly darker shadows, brighter lights, and vibrant colors for gameplay in any environment.

Brightest OLED
Experience stunning visuals with LG WOLED. Built on LG's OLED leadership and featuring Micro Lens Array+ (MLA+) technology, it delivers up to 37.5% brighter SDR, optimizing light efficiency and minimizing loss. It represents a standard luminosity of 275 nits (APL 100%) and a peak brightness of 1300 nits (APL 1.5%), ensuring vivid, true-to-life colors for immersive, precise gaming even in bright environments.

Go wide. Not short.
The 21:9 UltraWide sweet spot for gaming
The 21:9 curved OLED monitor provides an immersive and captivating experience for both gaming and various entertainment content, thanks to its balanced and optimized aspect ratio.

The ideal curvature 800R
Immerse in the 800R curve for a consistent FOV (Field of View) on a desk designed to match natural sight, placing you at the core of its curvature. With a consistent 90-degree viewing angle across the entire screen, it delivers vivid, distortion-free graphics as you explore the gaming universe.

Deeper black,
realistic color

Experience unparalleled depth and vibrant realism with VESA DisplayHDR true black 400, delivering detailed black expression even in the darkest scenes. With a 1.5M contrast ratio, DCI-P3 98.5% (typical) color gamut ensures that colors are displayed with realistic detail, just as originally intended.

Advanced eye comfort technologies
by three UL verifications

Featuring an anti-glare finish, LG WOLED’s advanced eye comfort technologies minimize frustrating reflections and keep your eyes comfortable, delivering crystal-clear gaming performance with consistent clarity. With UL verifications in key areas—limiting harmful blue light exposure and preventing distractions from flickering lights—these technologies promote visual comfort and contribute to a smoother gaming experience, whether you’re gaming in bright environments or LED-lit rooms.

0.03ms (GtG) speed,
240Hz smooth gameplay

To bring you a swift 0.03ms (GtG) response and a rapid 240Hz refresh rate, reducing reverse ghosting for crystal-clear, fluid visuals. Dive into more immersive gameplay with every frame.

All-in-One USB-C for responsive gaming
Connect your laptop to the monitor with a USB-C cable for up to 65W power delivery, eliminating the need for a separate adapter. Enjoy WQHD resolution and a 240Hz refresh rate via DP 1.4 or HDMI 2.1, ensuring your gaming remains uninterrupted.

Smooth motion, infinite play
Our monitor certified with ClearMR 13000, exceeding VESA testing with a Clear Motion Ratio of over 12500. It brings to captures the subtle blurring that occurs around the edges of moving objects, display fast-moving action with fine details.

Advanced gaming features
•Low Latency reduces input lag for real-time response.
•Black Stabilizer brightens dark scenes, helping gamers spot enemies and details.
•Crosshair enhances precision for deadly accuracy.
•FPS Counter shows your real-time frame rate.

Plunge into the world of PC and console gaming!
LG UltraGear™ monitors deliver smooth, responsive gameplay for both PC and console, whether you're diving into fast-paced action or exploring vast open worlds. With HDMI 2.1 support, they offer flexible compatibility—from keyboard and mouse to joystick—along with fluid motion, low latency, and vibrant details for an optimized gaming experience across various genres and platforms.

Plugin for immersive sound effect
Enjoy gaming with seamless voice chat via the 4-pole headphone out. Get fully immersed with the virtual 3D sound powered by DTS Headphone:X, while the built-in 7W x2 speakers with Depth-Sound technology deliver a powerful, dynamic audio experience.

Seamless gameplay powered by LG Switch
The LG Switch app optimizes your monitor for both gaming and everyday life. Effortlessly customize your preferred image quality and brightness, then apply your settings instantly with a hotkey. Plus, you can split the display into 11 options and quickly launch your video call platform, making it even more convenient.

Protecting OLED via On-Screen Display
Through On-Screen Display, you adjust OLED brightness and enable protection settings to prevent afterimages or burn-in, allowing you to enjoy superior OLED picture quality for longer. Plus, gamers can also easily customize their gaming setup for optimal performance.

Clutter-free, sleek design
The clutter-free L-stand and sleek design are crafted to save desk space and minimize dead zones, making your setup clean and efficient. Experience hexagon lighting and a virtually borderless 4-sided design, paired with a fully adjustable base for swivel, tilt, and height adjustments.
Display
Display diagonal44.5
Display resolution3440 x 1440
HD typeWide Quad HD
Native aspect ratio21:9
Display technologyOLED
Panel typeOLED
TouchscreenNo
Display brightness (typical)275
Response time0.03
Response time measurement typeGTG (Gray to Gray)
Screen shapeCurved screen
Screen curvature rating800R
Contrast ratio (typical)1500000:1
Maximum refresh rate240
Viewing angle, horizontal178
Viewing angle, vertical178
Display number of colours1.07 billion colours
Pixel pitch0.303 x 0.303
Display diagonal (metric)113
High Dynamic Range (HDR) supportedYes
High Dynamic Range (HDR) technologyDisplayHDR 400 True Black,HDR Effect,High Dynamic Range 10 (HDR10)
Colour gamut standardDCI-P3
DCI-P3 coverage98.5
Performance
NVIDIA G-SYNCYes
AMD FreeSyncYes
AMD FreeSync typeFreeSync Premium Pro
Smart modesEnergy saving
Multimedia
Number of speakers2
RMS rated power14
Built-in speaker(s)Yes
Design
Market positioningGaming
Product colourBlack
Ports & interfaces
Built-in USB hubYes
USB Type-A downstream ports quantity2
USB Type-C downstream ports quantity1
USB Type-C DisplayPort Alternate ModeYes
USB Power Delivery (USB PD)Yes
USB Power Delivery up to65
HDMIYes
HDMI ports quantity2
DisplayPorts quantity1
DisplayPort version1.4
Headphone outYes
Ergonomics
VESA mountingYes
Panel mounting interface100 x 100
Height adjustmentYes
SwivellingYes
Tilt adjustmentYes
Picture-in-PictureYes
Power
Energy efficiency class (SDR)F
Energy efficiency class (HDR)E
Energy consumption (SDR) per 1000 hours41
Energy consumption (HDR) per 1000 hours39
Power consumption (off)0.3
AC input voltage100 - 240
AC input frequency50/60
Power supply typeExternal
Weight & dimensions
Width (with stand)992.7
Depth (with stand)338.6
Height (with stand)661.7
Weight (with stand)13500
Width (without stand)992.7
Depth (without stand)218
Height (without stand)457
Weight (without stand)8900
Packaging data
Package width1143
Package depth550
Package height301
Package weight18900
Other features
Brand specific technologiesBlack Stabilizer
FPS counterYes

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Buykingston order despatch times:

We will despatch your order the very same day if we receive cleared payment by 12:00 pm Mon-Fri.

These delivery estimates apply when you order up to 12:00 pm Mon-Fri (excluding public holidays).

We charge a one off delivery cost as outlined below regardless of how many items you order or the weight of your order.

Estimated delivery times are provided to us by the respective delivery companies. We pass this information onto you, the customer.

Despatch times do not apply to UK public holidays.

Estimated delivery times are taken from the next available working day available for delivery. For example if an order was despatched on a working Wednesday by 3pm, the first available working day for delivery would be Thursday provided you placed your order by 3pm on the Wednesday. If the next available weekday is a UK bank holiday/public holiday then your order will be despatched on the next available working day.

Our warehouse reserves the right to upgrade the delivery method you select on your order.

Our available delivery options*

Contact us for a shipping quote.

*All delivery times are estimated unless stated.

Product Returns Note

Buykingston offers a very flexible and hassle free returns policy. If for whatever reason you are not happy with the item purchased you can return it to us within 12months for a refund (for unused and unopened items) or within 30 days on opened and used items for a refund. This applies to items purchased direct through Buykingston  only.

Our 30 Day Returns Money Back Guarantee Satisfaction Guarantee:
For items opened and used and that are returned in a resellable condition.

Our 365 Day Returns Money Back Guarantee Satisfaction Guarantee:
For items that remain sealed and unused.

Some items are excluded from our moneyback guarantee unless they have developed a fault. These include;

- Headphones
- Earphones
- Custom made and designed products such as flash memory products with custom logo’s on them. E,g USB flash drives and memory cards with your own logo

Returns FAQs

What is your returns criteria?
On opened items 30 days from date of receipt or expected date of receipt on non tracked items.
On unopened items 365 days.

How do i go about returning my order?
Please contact us via our contact page with your order number where we will present you with an RMA number and returns label.

Do i need to contact you before returning my order?
Yes, to obtain an RMA number.

Does my item have to include its original packaging?
Yes for items that fall within our 30 day money back guarantee and our 365 day returns. Of course for faulty items we realise you may no longer have the packaging.

Who deals with the warranty on a faulty item?
We will. In some circumstances we may ask you to contact the manufacturer direct for assistance.

Please ensure you have read and comply in full with Section 11 & 13 of our terms and conditions which you can read here in full.