LG 27UP850 4K UHD model with USB-CAs 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.
The ‘4K’ UHD resolution provides a good amount of desktop real-estate and detail to suitably high resolution content. The LG 27UP850 (27UP850-W owing to white rear) offers this experience, with some additional attractive features such as strong ergonomic flexibility and USB-C connectivity. The monitor has a homely design with brushed dark matte plastic bottom bezel and brushed silver-coloured stand. The top and side bezels are dual-stage, with slim panel border flush with the rest of the screen and a slender hard plastic outer part. The OSD (On Screen Display) is controlled by a joystick which faces down beneath the central LG logo.
A 27″ IPS-type panel is employed with 3840 x 2160 (‘4K’ UHD) resolution and 60Hz refresh rate. Adaptive-Sync is supported, including AMD FreeSync with a 40 – 60Hz VRR range. A matte anti-glare screen surface is included, with a 1200:1 static contrast ratio and 178°/178° viewing angles specified. 10-bit colour is supported (8-bit + FRC assumed), whilst hardware calibration is supported with a compatible calibrator and LG Calibration Studio (True Color Pro) software. A flicker-free (‘Flicker Safe’) WLED backlight is used, offering a typical maximum luminance of 400 cd/m² and 95% DCI-P3 colour gamut. This is a notable change from the predecessors to this model which offered ~sRGB gamut coverage. A ‘Reader Mode’ Low Blue Light (LBL) setting is included to aid relaxing viewing. The monitor supports VESA DisplayHDR 400, allowing it to put its 10-bit colour processing and colour gamut to good use. But this does not necessitate a particularly high luminance level or local dimming. A 5ms grey to grey response time is specified, which as usual should be taken with a pinch of salt. DAS (Dynamic Action Sync) is included to automatically minimise input lag. The rear is white plastic, with the included stand attaching centrally via a quick-release mechanism. It offers tilt, height and pivot adjustment. 100 x 100mm VESA holes are included for alternative mounting. The ports face backwards in a recessed area to the right of the stand attachment point and include; USC-C (96W PD, DP Alt Mode, upstream data), DP 1.4, 2 HDMI 2.0 ports, 2 USB 3.0 ports, a 3.5mm headphone jack and DC power input (external ‘power brick’). 2 x 5W Maxx Audio speakers are also included for potentially quite rich sound output.
Further information can be found on the manufacturer’s website. The monitor is listed with an RRP of ~$550. As usual there are some cut-down variants such as the 27UP650 (27UP650-W) which lacks USB connectivity or integrated speakers and the 27UP600 (27UP600-W) with a tilt-only stand, no USB connectivity or integrated speakers.