LG presents the UltraGear OLED 27GX790B, one of the fastest gaming monitors with an impressive fourth-generation tandem OLED panel – with a refresh rate of up to 720 Hz and a peak HDR brightness of 1,500 nits. The 27-inch model is aimed at enthusiasts who do not want to compromise in e-sports and high-refresh rate gaming and offers high color fidelity as well as variable resolution modes for maximum flexibility. The monitor combines W-OLED technology with gaming features such as FreeSync and G-Sync for smooth images.
- Tandem OLED with 720 Hz at FHD or 540 Hz at QHD (2560 x 1440)
- HDR peak brightness 1,500 nits, 99.5% DCI-P3, 0.02 ms response time
- Connections: DisplayPort 2.1, 2x HDMI 2.1, USB-C; extendable stand with pivot
- Gaming extras: Crosshair, Black Stabilizer, AMD FreeSync Premium Pro, Nvidia G-Sync
Tandem OLED technology for record speed and brightness
At the heart of the LG UltraGear OLED 27GX790B is a 27-inch fourth-generation tandem OLED panel from LG Display, which enables higher brightness and refresh rates thanks to its multi-layer structure. In Full HD mode (1920 x 1080) it achieves an impressive 720 Hz, ideal for competitive gaming in titles such as Counter-Strike 2 or Valorant, where every millisecond counts; at native QHD resolution (2560 x 1440) it delivers a stable 540 Hz. The full-surface brightness is 335 nits, while HDR content uses peak values of 1,500 nits – a significant leap compared to predecessors such as the 27GX790A.
With a response time of just 0.02 milliseconds, the monitor minimizes ghosting and motion blur, supported by AMD FreeSync Premium Pro and Nvidia G-Sync Compatible for tear-free rendition across the entire Hz scale. The color reproduction covers 99.5 percent of the DCI-P3 space, which guarantees precise images not only for games, but also for content creation; typical OLED advantages such as perfect black and infinite contrast are retained. Such specs position the 27GX790B as a benchmark device for 2026, plausibly due to the trend towards dual-mode panels in Samsung Odyssey or Alienware models.
Advanced gaming features and ergonomic design
The monitor integrates practical on-screen display options, including a software-based crosshair for precise aiming and Black Stabilizer, which brightens dark scenes without distorting the gamma curve – useful in shooter sessions at night. Connectivity includes DisplayPort 2.1 for full bandwidth, two HDMI 2.1 ports for consoles such as PS5 Pro and USB-C with Power Delivery; USB hub and KVM functions extend the usability as an all-rounder. The adjustable stand allows height adjustment up to 110 mm, tilt up to 21 degrees and pivot in portrait mode, which is suitable for multitasking or streaming montages.
This configuration seems plausible, as Notebookcheck and LG’s launch reports consistently confirm the tandem technology, similar to CES predecessors; prices of the predecessor at 620 euros indicate a premium segment.
Conclusion: New benchmark for high-end gaming monitors
The LG UltraGear OLED 27GX790B sets new standards in speed, brightness and color accuracy with 720 Hz tandem OLED, perfect for ambitious gamers and creators. Availability and exact price remain open, but based on the 27GX790A (approx. 620 euros) it will land in the upper segment – a worthwhile investment for QHD 540 Hz performance. The monitor underlines LG’s leadership in OLED gaming displays.
Source: LG
