LG UltraGear OLED 27" QHD 480Hz G-Sync Curved Gaming Monitor

Extreme OLED performance: elite speed, contrast, and accuracy

The LG UltraGear 27GX790A-B is a 27-inch OLED gaming monitor with QHD (2560 × 1440) resolution that sets a new standard in speed and visual fidelity. Designed for gamers who demand absolute performance, it offers a refresh rate of 480 Hz and a response time of just 0.03 ms (GtG) . Thanks to its OLED panel with MLA + (Micro Lens Array) technology and VESA DisplayHDR True Black 400 certification, it provides deep blacks, accurate colors and a maximum brightness of up to 1300 nits , even in bright environments.

This monitor is an exceptional choice for those looking for the best OLED monitor for sim racing , FPS, and fast-paced competitive titles.

Speed, sharpness, and color: advantages that bring you closer to victory

• First OLED monitor with VESA ClearMR 21000 certification : impeccable sharpness in motion.
• 480 Hz + 0.03 ms GtG : unprecedented speed to compete with an advantage.
• Pure blacks and intense colors : 1,500,000:1 contrast and 98.5% DCI-P3 coverage.
• Improved Brightness : Thanks to MLA+, SDR brightness is increased by up to 37.5% compared to previous generations.
• Full support for NVIDIA G-SYNC, AMD FreeSync Premium Pro, and VESA AdaptiveSync.
• Gamer design : ultra-thin edges, hexagonal RGB lighting and ergonomic base.

Technical details that make the difference

• Panel : 26.5″ flat OLED with QHD resolution (2560 × 1440)
• Frequency : 480 Hz (via DisplayPort 2.1)
• Response time : 0.03 ms GtG
• Brightness : 275 nits (typical) / up to 1300 nits (peak, APL 1.5%)
• Color gamut : DCI‑P3 98.5% with ΔE ≤ 2
• Contrast : 1,500,000:1
• Connectivity :
  • 1 × DisplayPort 2.1
  • 2 × HDMI 2.1
  • 2 × USB-A 3.0
  • 1 × USB-B
  • 4-pole headphone output (audio + microphone)
• Ergonomics :
  • Adjustable height (110 mm)
  • Tilt: -5° to 15°
  • Rotation: ±30°
  • Pivot: vertical rotation
  • VESA mount 100×100 mm

Designed for immersive setups and competitive gaming

Whether you're racing simulators like Assetto Corsa Competizione, iRacing, or F1 24 , or competing in shooters like Valorant and Call of Duty, the LG 27GX790A-B delivers the fluidity, low latency, and clarity you need. Its OLED panel delivers such realistic contrast that you can spot enemies in the shadows or read the asphalt mid-corner.

Plus, its customizable settings, features like Crosshair, FPS counter, Black Stabilizer, Dynamic Action Sync, and low-blue light technology make every session comfortable and precise.

Maximum compatibility with current and future hardware

• Compatible with high-performance PCs via DisplayPort 2.1 and HDMI 2.1 .
• Works with next-gen consoles (PS5, Xbox Series X|S) up to 120–144 Hz.
• Requires a modern GPU to take advantage of 480Hz.
• Supports hardware calibration with LG Calibration Studio.

Technical specifications

Make the leap to competitive OLED

The LG UltraGear 27GX790A-B is a benchmark choice for those looking for the fastest gaming monitor on the market without sacrificing image quality. Whether for sim racing, shooters, or eSports, this model takes your visual performance to the next level.

Ready to dominate with the first QHD OLED at 480Hz?