LG 39GX90SA-W 39-inch Ultragear WQHD (3440 x 1440) OLED Curved Gaming Monitor 240Hz, 1ms, NVIDIA G-Sync Compatible, AMD FreeSync Premium, VESA DisplayHDR True Black 400, webOS, USB Type-C, White: Is It Worth Buying?

The core numbers here point squarely at gaming. A 240Hz refresh rate paired with a 0.03ms GtG response time is aimed at fast-paced competitive titles where motion clarity and input feel matter more than pixel density. The 3440 x 1440 WQHD resolution across 39 inches keeps the GPU load lower than a 4K ultrawide would, which matters if you're trying to hit high frame rates without a top-tier graphics card. FreeSync Premium and G-Sync Compatible certification cover tear-free play across AMD, Nvidia, and current-gen consoles, and the 800R curve is steep enough to wrap the edges of the screen into your peripheral vision rather than just adding a mild bend.

The OLED panel is the other half of the story. DisplayHDR True Black 400 certification, a 1.5M:1 contrast ratio, and 98.5% DCI-P3 coverage suggest genuinely deep blacks and wide color, which OLED panels are known for delivering compared to LCD alternatives. Peak brightness is rated at 1300 nits, which should help HDR highlights stand out even though sustained full-screen brightness on OLED panels typically runs lower than that peak figure. The matte, anti-glare surface is a deliberate trade-off: it cuts reflections in bright rooms at the cost of a slightly softer, less glossy image than a glossy OLED panel would produce.

This monitor is a clear fit if you play fast, competitive games and also want to use the screen as a living-room-style display. webOS24 with built-in Netflix, Prime Video, Disney+, HBO Max, and over 300 free LG Channels means you can stream or cloud-game without a separate PC or console connected, which is unusual for a monitor in this category. The steep 800R curve and 21:9 aspect ratio also make it a strong pick for anyone who wants one screen to replace a multi-monitor racing or flight-sim setup, and the aggregate 4.4 out of 5 rating across 611 Amazon ratings suggests owners are broadly satisfied with the package.

If your work involves spreadsheets, coding, or multi-window productivity, the aggressive curve and single ultrawide panel can feel less practical than a flat monitor or dual-monitor setup, since windows near the edges appear distorted at close viewing distances. Anyone prioritizing pixel density for text sharpness should also note that WQHD spread across 39 inches is less dense than a 4K panel of similar size. If you fall into either of those camps, a flatter high-resolution monitor built for desk work, rather than this gaming-first OLED, is likely the better match.