AnsweredAssumed Answered

Cannot display 3840x2160 60Hz 4:4:4 pixel format on RX480

Question asked by armgadge on Oct 10, 2016
Latest reply on Dec 17, 2016 by armgadge

Recently, I bought RX 480 card. it is connected to the TV, by the HDMI cable.

I want to display windows desktop on 3840x2160 60Hz 4:4:4 pixel format.



My TV have a setting for the HDMI Input.

  • High-speed signal mode - support HDMI 2.0 bandwidth
  • Normal Mode - support HDMI 1.4 bandwidth


So I selected High-speed signal mode, but display was blank.

In rare cases, it works perfectly (and TV reported that signal is 4:4:4 chroma), but once turned off and on the TV, there is no display again.


When I configured to "Normal Mode", it could display on 4:2:0 chroma.


I also tried premium HDMI certified cable, but nothing changed.

I feel at a loss now... Is there any solutions?


My System:

  • AMD Graphics Card
    • MSI Radeon RX 480 GAMING X 8G
  • Operating System
    • Windows 10 Pro 64bit Version 1607
  • Driver version installed
    • Radeon Software Version 16.10.1
  • Display Devices
    • Toshiba REGZA 43G20X on HDMI, 3840x2160 60Hz
  • Motherboard
    • ASRock Z87 Extreme4
    • Intel Core i7-4770K
  • Power Supply Unit Make, Model & Wattage
    • SilverStone Strider Plus SST-ST75F-P 750W
  • RAM
    • 8GB DDR3 RAM