Author Topic: LG 27UL550 Review: Matte 3840x2160 LG AH-IPS with AMD Free-Sync  (Read 10676 times)


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Ghosting/Overdrive Performance

DSC_0031 by Dr NCX, on Flickr

AOC AG271QG vs BenQ Zowie RL2460 vs LG 27UL550 vs Sony 43X750F by Dr NCX, on Flickr

The 27UL550's pixel response times or overdrive is controlled by the Response Time setting which is correctly preset to the Fast setting.  The higher Faster setting causes obvious overshoot ghosting which appears in the form of bright, colored or dark transparent halos or glow on colors and shades in motion.

Response Time Fast versus Fastest
Spoiler (hover to show)

The LG 27UL550's default Fast Response Time setting offers very fast pixel response times for a 60hz and non-TN panel like the BenQ Zowie RL2460, and the LG 27UL550's Fast Response Time setting is free from overshoot ghosting and the smearing of black, browns and grays unlike many VA panels.  The 27UL550 is slightly faster than the 4K AH-IPS panel in my ViewSonic VP2780-4K from 2015, but is not as fast as 60hz TN panes and the fastest 60hz AUO AHVA panels in the Acer XB321HK, Acer X27, or as fast as the LG AH-IPS panel in the HP 25f.  When quickly panning the camera in games grey, white and yellow streaking is visible, but the streaks are very minor and will likely go unnoticed by most, myself included unless purposefully looking for overdrive flaws.  The 27UL550 is not one of the fastest 60hz monitors around, but it does offer excellent performance for a 60hz LCD panel.  If I were to score the 27UL550 I would give it a 90/100 versus 92.5/100 for the Acer XB321HK, Acer X27 and HP 25f, and 95/100 to the TN panel in the BenQ Zowie RL2460.  The LG is fast enough for all 60hz gaming including competitive gaming, and does not suffer from flaws which negatively affect any type of 60hz use.

« Last Edit: June 20, 2019, 03:05:04 am by NCX »