This article covers LG 有機EL ゲーミング モニター AI 39GX90SB-W 39インチ.

Overview

The LG 39GX90SB-W is a 39-inch curved OLED gaming monitor with a 3440×1440 ultrawide resolution and 240Hz refresh rate. Its 0.03ms GTG response time and 800R curvature deliver exceptional motion clarity and immersion. Built-in webOS with a remote control turns it into a smart monitor for streaming services, making it a versatile centerpiece for both gaming and entertainment. The MLA (Micro Lens Array) technology boosts peak brightness to 1300 cd/m², earning VESA DisplayHDR True Black 400 certification. The infinite contrast ratio of OLED ensures deep blacks and vivid colors.

Connectivity & Compatibility

Input options include two HDMI 2.1 ports (one with eARC), DisplayPort 1.4, and a USB-C port with 65W Power Delivery. This allows easy connection to PCs, consoles, and laptops while charging the latter. Additional USB-A ports and a wired LAN port are available. Wireless connectivity covers Wi-Fi 6 and Bluetooth 5.0, supporting AirPlay and Google Cast for screen mirroring. HDMI CEC enables power synchronization with connected devices via the remote.

Product Info

Released in late 2024, this monitor sits at the top of LG's UltraGear lineup. Priced around ¥200,000, it combines OLED technology with ultrawide 240Hz performance—a rare combination. The standard warranty is three years, extendable to four with product registration. Accessories include a remote control, power cable, HDMI cable, DisplayPort cable, and USB-C cable. It targets enthusiasts who demand both color accuracy and high refresh rates. Built-in stereo speakers eliminate the need for external audio for casual use.

Best Use Cases

  • Immersive gamers: The 800R curve and 21:9 aspect ratio enhance peripheral vision in racing and FPS titles. The 240Hz refresh rate ensures smooth motion in competitive play. However, it is not as wide as 32:9 super ultrawide, so it may not fully replace a multi-monitor setup.
  • Content creators: DCI-P3 98.5% coverage and true blacks from OLED make it suitable for video editing and photo retouching. However, Adobe RGB coverage is not specified, so print work may require additional calibration. Check if an sRGB mode is available for web content.
  • Living room all-in-one: With webOS and a remote, you can stream Netflix, YouTube, and more without a PC. Ideal for users who want a single display for gaming and media consumption. Note that it lacks a TV tuner, so an external tuner is needed for terrestrial broadcasts.

Product Disclosure (Amazon)

  • Manufacturer: LG
  • Seller: Amazon.co.jp
  • Fulfilled by: Amazon.co.jp
  • ASIN: B0H41SP2ZZ
  • Note: This article covers a manufacturer-made product based on Amazon listing details.