The LG 34GN850-B is a high-performance ultrawide gaming monitor praised for its fast 144Hz refresh rate, 1ms response time, and excellent color accuracy. However, potential buyers should be aware of its inherent IPS limitations, including low contrast ratios and occasional backlight bleeding issues. It remains a strong choice for gamers prioritizing speed and color over deep blacks.
Full review
Panel and Image Quality
The LG 34GN850-B uses a 34-inch Nano-IPS panel at 3440x1440, and color is its strongest suit. The Nano-IPS coating widens the gamut to roughly 98% DCI-P3, well beyond the 99% sRGB of older IPS ultrawides, so colors are rich and accurate while retaining IPS's wide, consistent viewing angles. It's a capable panel for both gaming and color-aware creative work.
The familiar IPS limitation is contrast. With a static ratio around 1000:1, blacks lift toward gray and the panel can't match the inky depth of the VA and OLED options here; reviewers including RTINGS also note backlight bleed and uniformity issues common to the panel type. The monitor carries VESA DisplayHDR 400, but that tier means HDR brightens the image without delivering the local-dimming contrast needed for a true high-dynamic-range effect.
Gaming Performance
Speed is where the 34GN850-B shines. It runs at 144Hz natively and overclocks to 160Hz, and the Nano-IPS panel is genuinely fast, with a 1ms gray-to-gray response that is realistic rather than purely marketing, giving crisp motion without the dark-scene smearing VA panels exhibit.
Adaptive sync is broad: the monitor is certified both NVIDIA G-Sync Compatible and AMD FreeSync Premium Pro, so it delivers tear-free variable refresh on either GPU brand. LG's gaming extras, including Black Stabilizer for visibility in dark areas and Dynamic Action Sync for input lag, round out a package built for responsive, fast-paced play. For competitive and reflex-driven gaming this is one of the quicker LCD ultrawides of its generation.
Design, Connectivity, and Who It's For
The 34GN850-B wears LG's UltraGear design with a red rear accent ring and a sturdy stand offering height and tilt adjustment, wrapped around a 1900R curve. It's a clean, gaming-focused look without the heavier RGB theatrics of some rivals.
This monitor is for the gamer who wants speed and color above all else. The combination of a fast 160Hz Nano-IPS panel, wide DCI-P3 coverage, dual-brand adaptive sync, and accurate, wide-angle color makes it a strong all-rounder, provided you accept IPS contrast and the possibility of backlight bleed. Anyone who games in a dark room and prizes deep blacks should compare it against the VA and OLED alternatives in this group.
Strengths
- +Delivers a fast 144Hz refresh rate with 1ms GtG response time for smooth gaming
- +Features an IPS panel with excellent color accuracy and wide viewing angles
- +Includes a 3440x1440 resolution that provides sharp image quality for productivity
- +Supports both NVIDIA G-Sync Compatible and AMD FreeSync Premium Pro technologies
Watch-outs
- −Suffers from low contrast ratio typical of IPS panels, resulting in washed-out blacks
- −Backlight bleeding and uniformity issues are frequently reported by users
How it compares
The LG 34GN850-B offers a balanced mix of speed and color accuracy that outpaces the older connectivity and lack of HDR found in the ASUS ROG Swift PG349Q, yet it cannot match the perfect black levels of the Dell Alienware AW3423DW or the deep contrast of the MSI Optix MAG342CQR. While it shares the IPS panel limitations of the ASUS model regarding washed-out blacks, it avoids the massive desk footprint and extreme price tag of the Samsung Odyssey G9.
Who this is for
At a glance: gamers prioritizing fast response times and color accuracy over deep blacks.
Why you’d buy the LG 34GN850-B
- Delivers a fast 144Hz refresh rate with 1ms GtG response time for smooth gaming.
- Features an IPS panel with excellent color accuracy and wide viewing angles.
- Includes a 3440x1440 resolution that provides sharp image quality for productivity.
Why you’d skip it
- Suffers from low contrast ratio typical of IPS panels, resulting in washed-out blacks.
- Backlight bleeding and uniformity issues are frequently reported by users.
Rating sources
Our 4.4 score is the average of these published ratings. Ratings marked * were derived from the reviewer’s written analysis or video transcript — the publisher didn’t print an explicit numeric score, so we inferred one from their own words. Click through to verify. More about methodology.
