(How)Can I get 3840x2160 120Hz from the iGPU in my ROG Maximus Z790 Formula w/i9-149000ks?

[Hetware]

I am trying to get maximum performance from my OLED TV which I am using for a monitor.  My Lenovo ThinkPad with an NVIDIA RTX™ 5000 Ada 16GB GPU drives the monitor at it's maximum 3840x2160 120Hz over HDMI.  When I looked at the specs on the intel iGPU it said it could support the 3840x2160.  Under OpenSuSE I could only get 3840x2160 30Hz.  From what is said online, I believe using the Display Port rather than HDMI might give me a higher refresh rate.  My TV doesn't support Display Port, but an active adapter might overcome that limitation.

Is it worth trying?  Can my ROG Maximus Z790 Formula w/i9-149000ks support 3840x2160 120Hz or even 3840x2160 60hz?

[Hetware]

I found that I can get 60 Hz under Windows.  So part of the issue is with Linux drivers.  But I would still like to know if I can get the 120Hz 3840x2160 from the hardware.

[Hetware · Accepted solution]

The obvious* solution was to go from the motherboard's Thunderbolt USB-C to the TV's HDMI to get the display port functionality.  I now have the desired 3840x2160 120Hz with both Widows 11 and OpenSuSE Leap 15.6.  *Not obvious.