Overview

The LG 34GX900A-B is a 34-inch ultrawide QHD OLED gaming monitor from LG's UltraGear lineup. With a 3440×1440 resolution, 240Hz refresh rate, and 0.03ms GtG response time, it delivers exceptionally smooth motion for fast-paced competitive games. The aggressive 800R curvature wraps around your field of view, enhancing immersion. It also carries DisplayHDR True Black 400 certification, offering deep blacks and vibrant highlights typical of OLED technology.

Connectivity & Compatibility

The monitor provides two HDMI 2.1 ports, one DisplayPort 1.4, and one USB-C port with 65W Power Delivery. HDMI 2.1 supports 4K 120Hz (downscaled) and VRR on PS5 and Xbox Series X. DisplayPort 1.4 handles full 3440×1440 at 240Hz from a PC. USB-C allows single-cable video and charging for compatible laptops, reducing desk clutter. Both AMD FreeSync Premium Pro and NVIDIA G-Sync Compatible are supported, ensuring tear-free gameplay across PC and console.

Product Info

Released in late 2025, the LG 34GX900A-B sits at the high end of the ultrawide gaming monitor market. Its price is around ¥196,574 (approximately $1,300 USD). The monitor comes with a 2-year limited warranty covering the OLED panel and major components. Accessories include power cable, HDMI cable, DisplayPort cable, USB-C cable, stand base, and quick start guide. It competes directly with other 34-inch OLED ultrawides like the ASUS ROG Swift PG34WCDM and Dell Alienware AW3423DWF.

Best Use Cases

  • Competitive FPS gamers: The 240Hz refresh and 0.03ms response virtually eliminate motion blur, giving an edge in aiming and tracking. A powerful GPU (RTX 4070 or better) is recommended to drive high frame rates at this resolution.
  • Immersion-focused single-player gamers: The 800R curve and OLED contrast create a captivating experience for RPGs, open-world adventures, and cinematic titles. HDR performance is excellent for movies as well. However, professional color-critical work may require additional calibration.
  • Minimalist desk setups: USB-C with 65W PD lets you connect and charge a laptop with a single cable, simplifying cable management. While it lacks a built-in KVM, you can share peripherals via the USB upstream port. It's a solid choice for users who want a clean, multi-device workspace.

Product Disclosure (Amazon)

  • Manufacturer: LG
  • Seller: Nestos Shop Ltd
  • Fulfilled by: Nestos Shop Ltd
  • ASIN: B0FDC2JBYG
  • Note: This article covers a manufacturer-made product based on Amazon listing details.