LG 45GX950A-B 45-inch Ultragear 5K2K WUHD (5120 x 2160) OLED Curved Gaming Monitor, Dual-Mode, 165Hz, 0.03ms, NVIDIA G-Sync, AMD FreeSync Premium Pro, HDR True Black 400, USB Type-C 90W, DP2.1: Is It Worth Buying?

The core spec here is Dual Mode: you get 5120 x 2160 at 165Hz for story-driven, detail-heavy games, or a hotkey switch to Wide Full HD at 330Hz when frame rate matters more than resolution. That flexibility only pays off if your GPU can actually push pixels at these resolutions, so this is a monitor built around a capable PC first and a console second. The 0.03ms GtG response time and OLED panel address motion clarity directly, and with both NVIDIA G-Sync compatibility and AMD FreeSync Premium Pro on board, tearing and stutter are handled regardless of which graphics card you're running.

Brightness and color are also spec'd for serious use: up to 1300 nits peak, 98.5% DCI-P3 coverage, a 1.5M:1 contrast ratio, and DisplayHDR True Black 400 certification. Those numbers point to strong HDR highlights against OLED's native deep blacks, which matters most in dark, high-contrast scenes. The updated subpixel layout pushing 125 PPI is worth noting too, since text clarity has historically been a weak point for large OLED monitors used for productivity, not just gaming.

This is a clear fit for someone building a high-end gaming setup around a 4090-class or equivalent GPU, who wants one screen that handles both ultra-wide story games and competitive titles without swapping monitors. It also works for people who split time between gaming and content-heavy desktop work, since the resolution and PPI give you real screen real estate along with sharp text. DisplayPort 2.1 and 90W USB-C mean it can also serve as a single-cable hub for a laptop, which is a convenience worth factoring into the buying decision.

If your GPU can't consistently drive 5K-class resolutions, a lot of this monitor's value goes unused, and a smaller or flat high-refresh panel will get you closer to peak frame rates for less money. Anyone planning to run static UI elements, taskbars, or HUDs on screen for extended periods should also weigh the general burn-in risk that comes with OLED technology before committing to a panel this size and price point. Buyers who mainly want a monitor for office work or media consumption, without the gaming use case, are paying for gaming-specific specs they won't use.