Hi Rimmsi, thanks for your reply! Before buying the 6900 XT, I wanted to confirm that someone had actually achieved 120Hz. Now I know it is possible.I'm currently on the latest macOS (Sequoia), but RX580 is still limited by 60Hz, so will now try 6900xtWhat version of MacOS are you using? I can't get more than 60Hz in 4k in Monterey, 4k 120Hz is already running in Sequoia.