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PC Graphics

popesey
Journeyman III

No 4k resolution options in windows on my AMD Radeon RX 550

Hi I've have recently invested in a new Dell OptiPlex 7070 i7 workstation. It currently has a AMD Radeon RX 550 graphics card installed which i plan to take advantage of and use. I can't figure out how to run my monitors at UHD (4K) resolutions though. In windows the maximum resolution option is set at 1920x1080. I cannot select a higher resolution and it dosen't give me a higher resolution option to select in display preferences. I know my MiniDP to HDMI adapters and HDMI cords are 4k compliant - I have success at running 4k to my monitors (Samsung U28H750UQE model - 4k monitors) on other systems using the same set up, the same cords and adapters. So i know it's not the cords or adapters that are causing the issue. I have tried installing the latest drivers and software aswell as rolling back the driver using the clean install technique. I have spent quite alot of time trying to figure out what the issue is. Any help would be kindly appreciated.

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popesey
Journeyman III

It turned out to be the adapters - Display port to HDMI adapters. By using a straight display port to display port cord, I was able to get the 4k resolution. 

You need to purchase a Active DP>HDMI HD Adapter which are fairly expensive. They offer 4k resolutions.

Something in the line like this one at Amazon:

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