That linked table indicates even 4k30fps (at 4:4:4) requires 6.18Gbps, while the motherboard page here: https://www.gigabyte.com/Motherboard/GA-AB350N-Gaming-WI

That linked table indicates even 4k30fps (at 4:4:4) requires 6.18Gbps, while the motherboard page here: https://www.gigabyte.com/Motherboard/GA-AB350N-Gaming-WIFI-rev-10#kf https://www.gigabyte.com/Motherboard/GA-AB350N-Gaming-WIFI-r... Under the HDMI section indicates up to 5Gbps video bandwidth (in addition to 8 channel audio). So on the surface it sounds like I shouldn't even get 30fps, but I do. Thank you for the info, it looks like the board isn't up to the task via HDMI so I will make the effort to find a Displayport adapter. That PC has a LOT of life left in it and I'd like to get the most out of it ;-)