In the not-too-distant past, monitors came in one basic flavor: 60 hertz (Hz) business screens with a limited list of features and adequate performance. Now, the market divides into two distinct categories: gaming displays with fast refresh rates and low input lag, and professional monitors that provide excellent color accuracy and support HDR.
The 27UK670-B is an affordable IPS monitor that falls into the latter category. It offers great out-of-the-box color accuracy, covers 99% of the sRGB color spectrum, and has a wide viewing angle. The screen also supports a wide range of resolutions, from Full HD up to 4K. The IPS panel is flicker-free, which reduces eye strain when working long hours.
Unfortunately, the contrast ratio is mediocre and the panel doesn't have local dimming. This makes the display unsuitable for use in dark rooms. Fortunately, the LG 27UK670-B has a USB-C port, which allows you to set up a convenient one-cable setup and charge your laptop at the same time.
The LG 27UK670-W supports FreeSync VRR, which eliminates screen tearing and stuttering for compatible AMD graphics cards. The monitor has two VRR modes: 'Basic' and 'Extended'. We tested the Extended mode with NVIDIA cards, and it didn't work properly, displaying constant tearing. The 'Basic' mode, however, worked perfectly.
The LG 27UK670-W is better than the Dell U2515H in almost every way, but it has a higher refresh rate and an inferior response time. In addition, it offers a wider viewing angle and HDR support.