Intel Macs 4K@120Hz/144Hz External

[archelium]

Hi Nikita,

I know your post is over a year old, but it's the 2nd link on Google Search on this issue and I figured I wanted to give it an update in case people were buying hardware based on that page.

I was under the impression that Apple broke DSC upon upgrade from Catalina to Big Sur and Intel Macs are only able to output 4K@60Hz regardless of hardware capability. I have been trying to get my 2019 i9 5500M 4GB MBP to work with a Gigabyte M28U and it is not working (USB-C to DP 1.4, USB-C to USB-C). Both cables and setup work flawlessly on the same hardware running Bootcamp Windows 10 (up to 4K@144Hz). You have my setup listed as green on your blog, but there are multiple reddit posts of exactly this issue I described with no solution, even years after Big Sur was released. Do you know if the was on MacOS Catalina, or is there a specific cable to get this to work?

Tony

[tonsky]

This is probably the issue #37. Try asking people there?

OS upgrade might help, but I can’t guarantee it.