LG
LG UltraGear 27GX790B-B OLED
Best premium display for serious competitive gamers.
Experience unparalleled gaming performance with the LG UltraGear 27GX790B-B OLED monitor. This 27-inch display boasts an astonishing 540Hz refresh rate in QHD or 720Hz in HD, combined with a lightning-fast 0.02ms response time for incredibly smooth, blur-free visuals. Immerse yourself in vibrant colors and deep blacks thanks to the OLED panel and VESA DisplayHDR True Black 500 certification. With versatile connectivity options including DisplayPort 2.1 and HDMI 2.1, plus NVIDIA G-Sync and AMD FreeSync Premium Pro support, enjoy seamless, tear-free gameplay.
$797.00
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Owner Satisfaction
4.5
/ 5
Category Rank
374
/ 3515
#374 in Computer Monitors
Price vs Category Average
+24%
Above average
Screen Size
27
/ inches
Who it's for
- Gamers and cinephiles desiring the most immersive and lifelike visuals.
- Competitive gamers who prioritize speed, precision, and fluid on-screen action.
- Content creators and enthusiasts seeking the ultimate high dynamic range experience.
Who should skip it
- Productivity users or those with static UI elements on screen often.
- Budget-conscious buyers or those seeking maximum value for their investment.
- Users in brightly lit environments or those prioritizing extreme peak brightness.
Key Specs
Screen Size
27 inches
Resolution
2560 x 1440 (QHD)
Refresh Rate
540Hz (QHD) or 720Hz (FHD)
Response Time
0.02ms (GtG)
Panel Type
OLED
Contrast Ratio
1.5 million:1
Color Accuracy
Delta E < 2
Brightness
335 nits typical
Features
- Extreme 540Hz refresh rate for ultimate smoothness
- Ultra-fast 0.02ms response time for zero motion blur
- Stunning OLED panel with true blacks and vibrant colors
- VESA DisplayHDR True Black 500 for superior HDR
- Full ergonomic stand for personalized comfort
- NVIDIA G-Sync and AMD FreeSync Premium Pro support
- Matte anti-glare screen reduces reflections
- Customizable RGB LED lighting for personalized aesthetics
What customers say
Customers consistently rave about the LG UltraGear 27GX790B-B OLED's breathtaking picture quality and unparalleled gaming performance. The vibrant colors, true blacks, and incredibly fast response times create an immersive experience that elevates gameplay. Users frequently highlight the smooth, fluid motion and visual clarity as standout features. While a premium investment, the monitor delivers a truly exceptional visual and gaming experience, justifying its cost for enthusiasts seeking top tier performance. The overall consensus points to a highly satisfying purchase for those prioritizing visual fidelity and speed.
Know before you buy
The Dual Mode allows you to toggle between two distinct performance profiles: a high-resolution QHD mode at 540Hz for visual fidelity, or an FHD mode at 720Hz for maximum frame rates. This flexibility lets you prioritize either resolution or raw speed depending on the specific game you are playing.
Yes, the 0.02ms response time is exceptionally fast and virtually eliminates motion blur and ghosting. This makes it an ideal choice for competitive fast-paced shooters where tracking moving targets clearly is essential.
While the OLED panel offers incredible contrast and deep blacks, it features a matte anti-glare coating to help manage reflections. With a typical brightness of 335 nits, it is best suited for controlled lighting environments rather than direct sunlight.
To fully utilize the 540Hz refresh rate, you will need a powerful GPU capable of outputting that many frames per second and a connection via DisplayPort 2.1. The monitor is compatible with both NVIDIA G-SYNC and AMD FreeSync Premium Pro to ensure smooth, tear-free performance regardless of your card.
Yes, the monitor is compatible with standard 100 x 100mm VESA mounts. This allows you to easily replace the included ergonomic stand with a monitor arm to save desk space or achieve a specific viewing angle.
The monitor features a Delta E < 2 rating, which indicates high color accuracy out of the box. While it is designed primarily for gaming, this level of precision makes it a capable secondary display for photo or video editing tasks.
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