LG 27UQ850 with 60Hz 4K UHD IPS Black panelAs an Amazon Associate I earn from qualifying purchases made using the “Buy” button at the bottom of this post. Where possible, you'll be redirected to your nearest store. Further information on supporting our work.
‘4K’ UHD IPS models are popular and versatile choices, providing an excellent pixel density and strong ‘desktop real estate’ potential. The LG 27UQ850 (27UQ850-W due to mainly white rear) provides this, with an enhanced contrast ‘IPS Black’ panel. The styling is in-keeping with many other modern LG models, including those in the ‘UltraFine’ series to which this belongs. The top and side bezels are dual-stage with slender panel border flush with the rest of the screen and slim hard plastic outer part. The OSD (On Screen Display) is controlled by a joystick which faces downwards in the central region of the bottom bezel.
A 27″ 3840 x 2160 (‘4K’ UHD) LG Display ‘IPS Black’ panel is used, most likely the LM270WR9-SSA1. This model has a specified static contrast ratio of 2000:1, twice the usual specified for an IPS model. Other aspects of note include a very light matte anti-glare screen surface, 178°/178° viewing angles and 10-bit (8-bit + FRC) colour support. A 60Hz refresh rate is supported alongside Adaptive-Sync, including AMD FreeSync with 40 – 60Hz VRR range. Hardware calibration is supported using LG Calibration Studio software and a compatible colorimeter, allowing the LUT of the monitor to be directly addressed and custom calibrated presets loaded onto the monitor. A flicker-free (‘flicker safe’) WLED backlight provides a 98% DCI-P3 colour gamut and 400 cd/m² typical maximum luminance.
VESA DisplayHDR 400 support is included, allowing a basic response to HDR10 content. The generous DCI-P3 coverage can be put to good use with 10-bit colour processing. But the brightness is limited by HDR standards and local dimming isn’t required to enhance contrast. A 5ms grey to grey response time is specified (pinch of salt required), with ‘Dynamic Action Sync’ (DAS) included as a nod towards low input lag. The included stand attaches centrally and can be easily removed via a quick-release mechanism. It offers tilt, height adjustment and pivot into portrait. Removing the stand reveals provision for 100 x 100mm VESA mounting. The ports face backwards in a recessed area to the right of the stand attachment point and include; USB-C (90W PD, DP Alt Mode, upstream data), DP 1.4, 2 HDMI 2.0 ports, 2 USB 3.0 ports plus Type-B upstream, a 3.5mm headphone jack and DC power input (external ‘power brick’). 2 x 5W Maxx Audio speakers are included.
Further details can be found on the manufacturer’s website. The monitor is listed for ~$700 USD. A variant with included calibration sensor is also available for ~$800 USD, the 27UQ85R.