3 Replies Latest reply on Dec 17, 2016 11:13 AM by armgadge

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


      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
      • CPU/APU
        • Intel Core i7-4770K
      • Power Supply Unit Make, Model & Wattage
        • SilverStone Strider Plus SST-ST75F-P 750W
      • RAM
        • 8GB DDR3 RAM