LG has officially introduced the UltraGear 27GX790B-B gaming monitor to the North American market after its initial debut in China, and it is clearly designed with one goal in mind: extreme competitive performance. This 27-inch monitor is built around LG Display’s latest 4th Gen Primary RGB Tandem OLED panel, a technology focused on delivering unmatched speed, clarity, and responsiveness for esports players.
What truly sets the LG UltraGear 27GX790B apart is its groundbreaking refresh rate capability. With support for up to 720Hz in a special low-resolution mode and an astonishing 540Hz at native 1440p resolution, this monitor sits at the very top of what is currently available in the commercial gaming monitor space. It is aimed squarely at professional and highly competitive gamers who prioritize reaction time and frame delivery over sheer pixel count.
At the heart of the UltraGear 27GX790B is LG’s 4th Gen Primary RGB Tandem WOLED panel. Unlike traditional LCD gaming monitors, this OLED panel offers near-instant pixel transitions, resulting in an ultra-fast 0.02ms response time. This level of speed virtually eliminates ghosting and motion blur, which is crucial for fast-paced competitive titles such as Counter-Strike 2, Valorant, and other esports shooters.
The panel also delivers excellent visual quality, with 99.5 percent DCI-P3 color gamut coverage. This ensures vibrant colors and accurate reproduction, making the monitor suitable not only for gaming but also for content creators who value color precision.
The standout feature of the LG UltraGear 27GX790B is its dual refresh rate approach. At its native 2560 × 1440 resolution, the monitor supports an incredible 540Hz refresh rate, already placing it among the fastest gaming monitors in the world. For players who want to push responsiveness even further, LG includes a 720Hz mode that operates at 720p resolution.
This dual-mode design gives gamers the flexibility to choose between sharper visuals or maximum speed depending on the game and competitive scenario. In esports environments where every millisecond matters, this flexibility can offer a tangible advantage.
Input latency is where this monitor truly shines. In 720p at 720Hz, frame time drops to under 1.4ms per frame, delivering near-instant feedback from mouse and keyboard inputs. Even at 1440p and 540Hz, the frame time remains exceptionally low at around 1.85ms.
These figures are especially meaningful for professional players and serious enthusiasts, where even a slight delay can affect aiming precision, reaction time, and overall performance in high-stakes matches.
Despite its focus on speed, the UltraGear 27GX790B does not compromise on display quality. The panel reaches up to 335 nits of peak brightness in SDR mode and an impressive 1500 nits in HDR. It carries the DisplayHDR True Black 500 certification, ensuring deep blacks, high contrast, and impactful highlights during HDR gaming and media playback.
This combination of high brightness and OLED contrast results in immersive visuals, especially in dark scenes where detail visibility is critical.
LG equips the monitor with a comprehensive selection of modern ports, including HDMI 2.1, DisplayPort 2.1, one USB-C port, two USB-A ports, and a 3.5mm audio jack. This ensures compatibility with high-end gaming PCs, next-generation consoles, and peripherals.
The adjustable stand allows for height, tilt, and swivel adjustments, helping gamers achieve an ergonomic setup. RGB lighting on the rear panel adds a subtle gaming aesthetic without being distracting, fitting well into modern gaming setups.
The LG UltraGear 27GX790B-B is priced at $999.99 in the United States and is listed on Amazon for US customers. This premium pricing reflects its cutting-edge OLED panel technology and class-leading refresh rate performance.
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Using the LG UltraGear 27GX790B feels like stepping into the future of competitive gaming displays. Motion clarity is on an entirely different level compared to standard 144Hz or even 240Hz monitors. Fast camera movements remain incredibly smooth, and tracking enemies in FPS games feels more precise and controlled.
The OLED panel’s instant pixel response eliminates smearing, making fast-moving objects appear sharp even at extreme refresh rates. Colors look rich and accurate, while HDR content benefits from deep blacks and strong highlights. The monitor’s dual-mode refresh system is especially practical, allowing users to tailor performance based on their competitive needs.
However, this monitor is clearly not designed for everyone. The 720p mode, while exceptionally fast, sacrifices sharpness, which may not appeal to casual gamers or those who value high resolution for single-player titles. Additionally, fully utilizing 540Hz or 720Hz requires an extremely powerful PC capable of pushing very high frame rates consistently.
If you are a professional esports player or a serious competitive gamer who prioritizes speed, responsiveness, and input lag above all else, the LG UltraGear 27GX790B is one of the most advanced gaming monitors available today. It offers performance advantages that can genuinely matter in high-level competitive play.
On the other hand, if you are a casual gamer, content consumer, or someone who prefers higher resolution and cinematic visuals over extreme refresh rates, this monitor may be more than you need for its price.
The LG UltraGear 27GX790B Gaming Monitor is a bold statement from LG, pushing gaming display technology to its current limits. With its 4th Gen OLED panel, ultra-high refresh rates, and esports-focused design, it delivers performance that few monitors can match. While its premium price and niche appeal make it unsuitable for everyone, for competitive gamers chasing every possible advantage, the UltraGear 27GX790B stands as one of the fastest and most impressive gaming monitors on the market today.
Q1: What is the maximum refresh rate of the LG UltraGear 27GX790B?
The monitor supports up to 720Hz at 720p resolution and up to 540Hz at its native 1440p resolution, making it one of the fastest gaming monitors available.
Q2: Does the LG UltraGear 27GX790B use an OLED panel?
Yes, it features LG Display’s 4th Gen Primary RGB Tandem WOLED panel, offering ultra-fast response times, deep blacks, and excellent color accuracy.
Q3: Is the LG UltraGear 27GX790B good for esports gaming?
The monitor is specifically designed for competitive esports, delivering extremely low input lag, high refresh rates, and smooth motion ideal for FPS titles.
Q4: What is the price of the LG UltraGear 27GX790B in the US?
LG has priced the UltraGear 27GX790B-B at $999.99 in the US, and it is available through retailers like Amazon.
Q5: Does the LG UltraGear 27GX790B support HDR?
Yes, it supports HDR with DisplayHDR True Black 500 certification, offering strong contrast, deep blacks, and up to 1500 nits peak brightness in HDR mode.
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