LG 27UK650 27 inch UHD FreeSync modelAs 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.
With the introduction of ‘4K-ready’ games consoles and interest in high pixel density gaming from PC gamers, there is a fair bit of interest in ‘4K’ UHD monitors. Having tested a number of UHD models extensively, we can certainly see the appeal of having that sort of pixel density. The LG 27UK650 (27UK650-W to indicate glossy white back) represents something of a refresh of the popular LG UD6(8/9) models, models which offer an attractive mixture of price and performance. The front-face of the stand is more pronounced and there are slight aesthetic refinements elsewhere, but there are no drastic departures from the design language of the older models. Not as if that’s necessarily a bad thing. The dual-stage bezels return with their slim panel border and very thin hard outer bezel. The included stand appears robust and offers good ergonomic flexibility, including; tilt, height and pivot adjustment (rotation into portrait).
A stylish front
A 27” IPS (In Plane Switching) panel is used with a 3840 x 2160 (‘4K’ UHD) resolution and 60Hz refresh rate. AMD FreeSync is also supported (40 – 60Hz variable refresh rate range assumed in line with their other models). A light matte anti-glare screen surface is employed and a 1000:1 static contrast ratio is specified alongside 178° horizontal and vertical viewing angles. The monitor ‘supports’ HDR10, but only offers a single unit backlight solution (no local dimming) and has a colour gamut limited to ~sRGB. 99% sRGB is specified with no mention of anything broader, but there could of course be some extension beyond sRGB in some areas. So this is more a compliance feature that will allow the monitor to ‘react’ to HDR content like a sort of Dynamic Contrast mode than true HDR support, similar to what’s used on the likes of the Dell U2518D. An ‘HDR effect’ can also be added to SDR content, which again is software (or firmware) trickery rather than true HDR. The monitor supports 10-bit colour via 8-bit + FRC dithering and uses a flicker-free WLED backlight with a typical 350 cd/m² brightness output. A 450 cd/m² peak luminance is specified, perhaps achievable during HDR operation.
Other aspects of note include that the monitor comes factory calibrated and includes a calibration report, which is fairly standard on modern LG models. As also expected given the panel type, a 5ms grey to grey response time is specified. LG’s ‘DAS’ (Dynamic Action Sync) Low Input Lag mode also features to try to minimise input lag by cutting out extraneous processing done by the monitor. A ‘Reader Mode’ Low Blue Light (LBL) mode also features, allowing users to quickly cut down on their blue light exposure for relaxing evening viewing. Or any other time they fancy cutting down on it, for that matter. The included stand can be removed and an alternative 100 x 100mm VESA solution attached instead. The ports include; 2 HDMI 2.0 ports (support FreeSync + HDR), DP 1.2a (support FreeSync + HDR) and a 3.5mm headphone jack.
A minimalistic glossy white rear
Further information can be found on LG’s website. Note that the 27UK850 (27UK850-W) denotes a model that includes integrated speakers and USB-C connectivity. The monitor is available with an MSRP of $549.99.