LG 27EP950 with 60Hz 4K OLED 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.
OLED monitors offer clear benefits over their LCD counterparts, particularly when it comes to areas such as contrast and pixel responsiveness. The LG 27EP950 (27EP950-B owing to the black rear) joins its larger brother in the UltraFine OLED Pro series as a colour-focused offering with this panel type. The monitor has simple and modern styling, with a brushed metal stand base and thick cylindrical neck. The bezels are fairly slender, with the panel border covered by the bezel. The OSD (On Screen Display) is controlled by a joystick which faces downwards beneath the central brand logo.
A 26.9″ OLED panel from JOLED is adopted with 3840 x 2140 (‘4K’ UHD) resolution and support for a 60Hz refresh rate. A very light matte (‘semi glossy’) screen surface is expected, similar to the larger variant. Other aspects to note include a 1M:1 static contrast ratio, 178°/178° viewing angles and true 10-bit colour. The monitor is factory calibrated, with hardware calibration supported via a compatible calibration device and LG Calibration Studio (True Color Pro). A colour gamut of 99% DCI-P3 (99% Adobe RGB) is supported, whilst a ‘minimum’ brightness of 250 cd/m² is specified. To help prevent burn-in issues, a brightness limiter is employed which will potentially reduce brightness when mainly brighter content is displayed. The monitor responds to HDR10 content via VESA DisplayHDR 400 True Black, with a peak luminance of 400 cd/m² and the clear advantages of self-illuminated pixels. The relatively generous colour gamut can also be put to good use, alongside the 10-bit colour support.
A 1ms grey to grey response time is specified – unlike with LCDs, this is a fair representation of actual expected performance without excessive overdrive being required. Dynamic Action Sync (DAS) is also supported, an integrated feature to minimise input lag. The stand attaches centrally and can be easily detached with a quick-release latch beneath the attachment point to reveal 100 x 100mm VESA holes. The stand includes tilt, swivel and height adjustment. The ports face backwards in a recessed area to the right of the stand and include; USB-C (90W PD, DP Alt Mode, upstream data), 2 DP 1.4 ports, HDMI 2.0, 3 USB 3.0 ports (plus upstream), a 3.5mm headphone jack and DC power input (external ‘power brick’).
Further details can be found on the manufacturer’s website. The monitor is listed for ~$3000 USD.