This article covers LG 34GX90SA-W 34インチ Ultragear WQHD(3440×1440) OLED カーブゲーミングモニター 240Hz 1ms NVIDIA G-Sync対応 AMD FreeSync Premium VESA DisplayHDR True Black 400 webOS USB Type-C ホワイト.

Overview

The LG 34GX90SA-W is a 34-inch Ultragear gaming monitor built around a WQHD (3440×1440) OLED panel with a 240Hz refresh rate and 0.03ms GtG response time. Its aggressive 800R curvature and a peak brightness of 1300 nits deliver a deeply immersive HDR experience, backed by DisplayHDR True Black 400 certification. A key differentiator is the built-in webOS 24 platform, which provides direct access to streaming apps and cloud gaming services like GeForce NOW without needing a separate PC or console. This monitor occupies the premium high-end segment of the gaming monitor market.

Connectivity & Compatibility

The monitor features HDMI 2.1, DisplayPort 1.4, and a USB Type-C port that supports 65W power delivery. This makes it ready for PlayStation 5, Xbox Series X/S, and high-end gaming PCs. The USB-C port can act as a single-cable solution for compatible laptops, simultaneously delivering video and charging. It supports both AMD FreeSync Premium and NVIDIA G-Sync Compatible for tear-free and stutter-free gameplay.

Product Info

Launched in late 2025, the LG 34GX90SA-W is priced around ¥194,338 on Japan. It comes with a 2-year warranty that covers the OLED panel. Included accessories are a power cable, DisplayPort cable, USB Type-C cable, and a remote control. In the competitive landscape of 34-inch WQHD OLED monitors, this model stands out due to its integrated smart TV capabilities and USB-C 65W charging, setting it apart from rivals like the ASUS ROG Swift PG34WCDM and Dell Alienware AW3423DW.

Best Use Cases

  1. Competitive gamers seeking the fastest response and highest frame rates. The 240Hz OLED panel with near-instant response eliminates motion blur, and the 800R curvature enhances spatial awareness in racing and FPS games. However, the strong curve may be less comfortable for general productivity or applications relying on straight lines. 2. Users who want an all-in-one entertainment hub. With webOS built in, you can stream Netflix, Prime Video, or play cloud games directly from the monitor without a PC. This is ideal for a dorm room, bedroom, or secondary setup where space is limited. 3. Content creators prioritizing accurate colors and deep blacks. The OLED panel covers 98.5% of DCI-P3 and meets DisplayHDR True Black 400 standards, making it suitable for photo and video editing. Be aware of potential burn-in with static on-screen elements — the built-in OLED care tools (pixel cleaning, screen shift) should be used regularly to prolong panel life.