The optional 4K display for the ThinkPad X1 Carbon 2020 improves the picture quality, but it has massive problems with PWM flickering. The screen also reduces the battery runtime of the mobile business notebook.
Lenovo has cancelled the matte WQHD panel in the EMEA region, so you have to get the glossy 4K screen, if you are not satisfied with the standard 1080p screen. The additional price of 170 Euros is not too high, and the subjective picture impression is very good. Our test unit surpassed the advertised luminance of 500 nits, but there are still limitations outdoors due to the very glossy screen surface.
The panel is not very well calibrated out of the box. You should definitely calibrate it or use our calibrated profile (available for download in the review) if you want to edit pictures and videos. Lenovo targets the P3 color gamut with the 4K screen, even though this color space cannot be covered completely (~86%).
…
Read full post here:
https://www.notebookcheck.net/Lenovo-ThinkPad-X1-Carbon-2020-The-4K-display-suffers-from-PWM-flickering.482623.0.html
