Custom Resolution Utility (CRU)

[LunaP]

(04-21-2021 04:51 PM)flep Wrote:  Hello.

I have a Samsung Q70T tv, which is a 4k 120hz native TV via HDMI 2.1 with VRR, which supports Gsync compatible via NVCP.

While I do have a good HDMI 2.1 cable, my GPU is a RTX 2080, which sadly doesn't have HDMI 2.1 output, only HDMI 2.0

I'm trying to setup the TV as a UltraWide resolution, and while I can get native 3440x1440 @ 60hz, 3440x1440 @ 70hz with custom NVCP resolution and even 3840x1607 (which is nice as I then can disable scaling) @ 70Hz via NVCP, I can't figured out how to get 100mhz, which from my research should be supported by HDMI 2.0 at 3840 or 3440 resolutions

I did a few tries with CRU via Detailed Resolutions testing different modes for timing, none worked with 100hz, not even 75hz I can get to work.

If anyone has any experience with something similar and could share some ideas / configs I need to try, I would appreciate.

Thanks!

You can use the DP 1.4 -> HDMI 2.1 adapter, which works great with CRU.

Not sure if links are allowed but just in case you can just search "Club 3D DisplayPort1.4 to HDMI 4K 120Hz HDR Active Adapter M/F CAC-1085" they have it on amazon and other stores.

I have 2080ti's and works great there, though running at 100mhz for 4:4:4/RGB @ 8bit, I think I need to get a shorter cable despite using a 10k cert cuz its 2 meters, since if I run 120hz I drop to 8bit ( still 444 or RGB though )

Though curious if there's any q90t owners on the thread that have managed to customize a res to fit within the 1075pixel clock I tried the LG ones but they just blank out the screen to no signal.