LG 27GX790B-B UltraGear 27” OLED QHD/FHD Dual Mode 540Hz/720Hz FreeSync/G-SYNC Widescreen Gaming Monitor

Manufacturer: LG | Model: 27GX790B-B.AEK | Product ID: 4680
£956.23 (inc. VAT)
6 in stock
100% Money Back Guarantee - Risk Free

Product Technical Specification

Efficiency Class
UK Energy Efficiency Class HDR G
UK Energy Efficiency Class F
Colour
Primary Colour Black
Dimensions
Length / Depth 220 mm
Width 605.2 mm
Height 527.6 mm
Width (without stand) 605.2 mm
Depth (without stand) 51.2 mm
Height (without stand) 351 mm
Weight 6.8 kg
Weight (without stand) 4.3 kg
Speakers
Speakers No
Lighting
Lighting / RGB No
Standards / Specifications
Adaptive Sync Technology (G-SYNC / FreeSync) AMD FreeSync Premium Pro, NVIDIA G-SYNC, adaptiveSync
Standard / specification HDMI 2.1, DisplayPort 2.1
Display
Display Size in Inch 27 "
Display Size in cm 67.3 cm
Display Resolution WQHD (2560 x 1440 Pixel)
Display Aspect Ratio 16:9
Display Refresh Rate 720 Hz
Display Panel Type OLED
Colour depth max. 1.07 billion colours (10 bit)
Colour Space (DCI-P3) 99.5 %
Contrast Ratio (Static) 1,500,000:1
Curved Display No
Display Response Time 0.02 ms
Display Response Time (Grey-to-Grey) 0.02 ms
HDR Yes
HDR Standard VESA DisplayHDR True Black 500
Screen Brightness SDR / normal 335 cd/m²
Viewing angle 178° horizontal / 178° vertical
Display Surface Type glossy / non-reflective
Touchscreen No
Ergonomics
Height adjustment Yes
Min. Adjustable Height 0 mm
Max. Adjustable Height 110 mm
Min. Swivel -30 °
Max. Swivel 30 °
Min. Tilt -5 °
Max. Tilt 21 °
Pivot Yes
Connectivity
Peripheral connectors 3.5 mm jack 4-pole, TRRS (1x)
Compatibility
Compatibility Note Please refer to the manufacturer's compatibility information. You can find the latest overview on the manufacturer's website.
External Ports
Display Connectors HDMI (2x), Display Port (1x), USB Type C (Display Port shared) (1x)
Display Connector Standards HDMI 2.1, DisplayPort 2.1
USB Hub Yes
Mounting
Vesa standard 100 x 100 mm

Delivery Options

Economy Delivery
FREE
Economy Delivery

Economy Delivery (UK)

Estimated delivery date: Fri 12th Jun 2026 to Mon 15th Jun 2026
Business Express
£6.95
Business Express

Business Express

Estimated delivery date: Thu 11th Jun 2026 to Sat 13th Jun 2026
View all Delivery Options & International Rates

LG 27GX790B-B UltraGear 27” OLED Gaming Monitor – 27" display size, OLED panel, QHD resolution, Dual Mode 720Hz at FHD (1920x1080) / 540Hz at QHD (2560x1440), 0.02ms response time, AMD FreeSync Premium Pro, NVIDIA G-SYNC compatible, Adaptive Sync, VESA DisplayHDR 500 True Black, HDMI 2.1, DisplayPort 2.1, and USB-C.

LG 27GX790B-B UltraGear 27” OLED Gaming Monitor at a Glance:

  • 27" gaming monitor with QHD resolution and 0.02ms response time
  • OLED panel with vibrant colour and crisp contrast
  • Dual Mode display – 720Hz at FHD (1920x1080) or 540Hz at QHD (2560x1440)
  • Adaptive Sync, AMD FreeSync Premium Pro, and NVIDIA G-SYNC support
  • Ergonomic and adjustable stand
  • Modern connectivity with HDMI 2.1, DisplayPort 2.1, and USB-C

Premium OLED Display

Unlock premium visuals, with the LG 27GX790B-B UltraGear 27” OLED Gaming Monitor. This 27” display harnesses 4th Gen Primary RGB Tandem OLED panel technology to create vibrantly coloured images with stark contrast and optimised brightness. This is paired with VESA Display HDR True Black 500 and a 99.5?I-P3 colour gamut, resulting in high colour fidelity, rich with detail and shadows. Enjoy heightened immersion, whether you’re gaming, watching a film, or creating content.

Dual Mode Display

For peak gaming performance, the LG 27GX790B-B UltraGear 27” OLED Gaming Monitor features Dual Mode technology. This enables you to play at a lower resolution with a high refresh rate or opt for the higher resolution with a lower refresh rate, whichever your gaming demands.

To give you the ultimate edge in competitive play, you can set this display to FHD (1920x1080) with an astonishing 720Hz refresh rate. Alternatively, you can choose QHD (2560x1440) at 540Hz, making your cinematic cut scenes smooth and visually stunning.

The LG 27GX790B-B UltraGear 27” OLED Gaming Monitor also features a 0.02ms response time, ensuring all fast-paced action stays free of motion blur. This is enhanced further by support for Adaptive Sync, AMD FreeSync Premium Pro, and NVIDIA G-SYNC variable refresh rate technologies. Each of these works to reduce screen tearing, stuttering, and ghosting by synchronising your GPU output with the display.

Connectivity and Ergonomics

To ensure optimal compatibility with modern hardware, the LG 27GX790B-B UltraGear 27” OLED Gaming Monitor features a range of connectivity options. This includes HDMI 2.1, DisplayPort 2.1, and USB-C. When using DP 2.1, you can take advantage of next-generation bandwidth for optimised performance, while the USB-C port offers a streamlined set up.

For enhanced comfort while you game, the LG 27GX790B-B UltraGear 27” OLED Gaming Monitor has an anti-glare and low reflection screen. This is paired with a selection of UL-verified eye comfort technologies, which are designed to reduce eye strain and fatigue while still providing the best picture and colour. What’s more, the stand can be ergonomically adjusted in height, swivel, tilt, and pivot so the screen is properly aligned with the rest of your set-up.

Efficiency Class
UK Energy Efficiency Class HDR G
UK Energy Efficiency Class F
Colour
Primary Colour Black
Dimensions
Length / Depth 220 mm
Width 605.2 mm
Height 527.6 mm
Width (without stand) 605.2 mm
Depth (without stand) 51.2 mm
Height (without stand) 351 mm
Weight 6.8 kg
Weight (without stand) 4.3 kg
Speakers
Speakers No
Lighting
Lighting / RGB No
Standards / Specifications
Adaptive Sync Technology (G-SYNC / FreeSync) AMD FreeSync Premium Pro, NVIDIA G-SYNC, adaptiveSync
Standard / specification HDMI 2.1, DisplayPort 2.1
Display
Display Size in Inch 27 "
Display Size in cm 67.3 cm
Display Resolution WQHD (2560 x 1440 Pixel)
Display Aspect Ratio 16:9
Display Refresh Rate 720 Hz
Display Panel Type OLED
Colour depth max. 1.07 billion colours (10 bit)
Colour Space (DCI-P3) 99.5 %
Contrast Ratio (Static) 1,500,000:1
Curved Display No
Display Response Time 0.02 ms
Display Response Time (Grey-to-Grey) 0.02 ms
HDR Yes
HDR Standard VESA DisplayHDR True Black 500
Screen Brightness SDR / normal 335 cd/m²
Viewing angle 178° horizontal / 178° vertical
Display Surface Type glossy / non-reflective
Touchscreen No
Ergonomics
Height adjustment Yes
Min. Adjustable Height 0 mm
Max. Adjustable Height 110 mm
Min. Swivel -30 °
Max. Swivel 30 °
Min. Tilt -5 °
Max. Tilt 21 °
Pivot Yes
Connectivity
Peripheral connectors 3.5 mm jack 4-pole, TRRS (1x)
Compatibility
Compatibility Note Please refer to the manufacturer's compatibility information. You can find the latest overview on the manufacturer's website.
External Ports
Display Connectors HDMI (2x), Display Port (1x), USB Type C (Display Port shared) (1x)
Display Connector Standards HDMI 2.1, DisplayPort 2.1
USB Hub Yes
Mounting
Vesa standard 100 x 100 mm

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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.

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Our available delivery options*

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*All delivery times are estimated unless stated.

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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.

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For items opened and used and that are returned in a resellable condition.

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For items that remain sealed and unused.

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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?
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Does my item have to include its original packaging?
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