The LG UltraGear 27GX790A-B is a 27-inch QHD (2560x1440) OLED gaming monitor with an ultra-fast 480Hz refresh rate and 0.03ms response time. It pairs true OLED blacks and a 1.5M:1 contrast ratio with DisplayPort 2.1, G-Sync Compatible and FreeSync Premium Pro support for tear-free competitive gaming.
Key Features
27-inch OLED panel with deep blacks and rich colour
QHD (2560x1440) resolution
480Hz refresh rate for extremely fluid motion
0.03ms response time
1.5M:1 contrast ratio
DisplayPort 2.1 plus HDMI connectivity
G-Sync Compatible and FreeSync Premium Pro support
VESA ClearMR 21000 motion clarity certification
DisplayHDR True Black support
Virtually borderless design with adjustable stand and RGB lighting
Full Specifications
General
Brand
LG
Series
UltraGear
Model
27GX790A-B
Part Number
27GX790A-B
Type
Gaming Monitor
Colour
Black
Display
Screen Size
27 inches
Panel Type
OLED
Resolution
QHD (2560 x 1440)
Refresh Rate
480Hz
Response Time
0.03ms
Brightness
275cd/m²
Contrast Ratio
1.5M:1
Gaming Features
Adaptive Sync
G-Sync Compatible, FreeSync Premium Pro
Motion Clarity
VESA ClearMR 21000
HDR
DisplayHDR True Black
Lighting
RGB lighting
Connectivity
Ports
DisplayPort 2.1, HDMI
DisplayPort
DP 2.1 (DP 1.4 also supported)
Design
Bezel
Virtually borderless
Stand
Adjustable stand
Who Is It For?
Competitive esports and FPS players who want the highest refresh rate
Gamers who want OLED contrast and near-instant response times
Enthusiasts with a high-end GPU and a DisplayPort 2.1 or HDMI 2.1 setup
In the Box
LG UltraGear 27GX790A-B monitor
Stand
Power cable
Display cable
Documentation
Frequently Asked Questions
What is the refresh rate and resolution? The monitor runs at up to 480Hz at QHD (2560x1440) resolution.
Does it support G-Sync and FreeSync? Yes, it supports G-Sync Compatible and FreeSync Premium Pro.
Which ports does it have? It offers DisplayPort 2.1 (with DP 1.4 support) and HDMI. Note that HDMI refresh rate limits depend on the graphics card.
Order the LG UltraGear 27GX790A-B from PC PARK with warranty and fast delivery across Saudi Arabia.
LG UltraGear 27GX790A-B 27"...
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Our Milestones
2023
Expanded our product catalog with the latest gaming and professional hardware, serving thousands of satisfied customers
2024
Launched our online store and delivery service, making tech accessible to customers across Saudi Arabia
2025
Reached a major milestone in customer satisfaction with enhanced after-sales support and warranty services
2026
Continuing to grow as Saudi Arabia's trusted destination for technology, gaming, and custom PC solutions
