WUHD Monitor Refresh Rate Limited to 60 Hz on Docked AMD Computers

Summary: Learn what to do if a WUHD (5120 x 2160) monitor's refresh rate is limited to 60 Hz on AMD computers connected to a dock by HDMI or USB Type-C port.

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Symptoms

When a wide ultra high definition (WUHD) display (for example, the Dell U4025QW) is connected to the HDMI or USB Type-C port of a dock with an AMD processor, the refresh rate of the display is limited to 60 Hz. The display is unable to refresh at 120 Hz.

Affected Platforms:

  • Dell 14 Plus 2-in-1 DB04255
  • Dell Pro 13 Plus PB13255
  • Dell Pro 14 PC14255
  • Dell Pro 16 PC16255
  • Dell Pro 16 Plus PB16255

Cause

AMD has confirmed its slice size limitation of the video driver. The Display Stream Compression (DSC) ratio for AMD is 2.8:1, which is lower than Intel or NVIDIA at 3:1.

Resolution

Connect the display directly to the computer to allow for a 120 Hz refresh rate.

Affected Products

Dell 14 Plus 2-in-1 DB04250, Dell Pro 13 Plus PB13255, Dell Pro 16 Plus PB16255, Dell Pro 14 PC14255, Dell Pro 16 PC16255
Article Properties
Article Number: 000289859
Article Type: Solution
Last Modified: 13 May 2025
Version:  2
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