Article Number: 000187882

Unable to Select 75 Hz for QHD(2560*1440) Resolution on Dell S2722DC/S2722DZ Monitor

Summary: This article provides information about displaying addressing an issue with HDMI port on the Dell S2722DC/S2722DZ monitor.

Unable to select 75 Hz for QHD (2560x1440) resolution on HDMI port, but without issues on USB-C connection.

Pixel clock for the monitor is set at 304.25 MHz which exceeded certain graphic card limits.
There is a graphic card limitation on pixel clock at 297 MHz for HDMI 1.4.
Example of graphic cards affected:
- Intel(R) Iris(R) Xe Graphics
- Intel(R) UHD Graphics

Note: There are certain graphic cards with higher pixel clocks that do support QHD at 75 Hz mode.

Switch to USB-C port when QHD 75 Hz (2560x1440) cannot be selected on HDMI port.