Samsung q80t 4k 120hz work in all ports

[Michael388]

So. Bought Samsung q80t, connected to it laptop with video card rtx 2060 in port  tv hdmi 4. In the settings only 2560x1440hz mode. No 4k 120hz. Then I bought a new hdmi cable version 2.1. Again there is no 4k 120hz.  Then I downloaded the utility cru resolution and could get 4k 120hz. Vrr with hdr 4k 120hz worked great.  Then i connected to the laptop my old hdmi cable ver 1.4. 4k 120hz working great  vrr with hdr works in all ports  hdmi ( hdmi 1, hdmi 2, hdmi 3, hdmi 4) with my old cable. How can this be?

Firmware 1402. 

[Larsson24]

You need to have hdmi 2.1 on your graphics card. Only RTX 3000 series and Radeon 6000 series have it. 

[Denni5M]

Yeah I was getting 120hz on Hdmi 3 as well on my 3070, I couldn't use HDMI 4 because it would flicker and cause issues because this model has issues with HDMI 2.1 at the moment. 

But you will find it's only 4:4:2 when using HDMI port 3, you still get 120hz 4k though. 

I didn't have to even setup a custom resolution or use CRU, it's just available in the PC list of resolutions listed. 

[ExtremeBalls]

Hey my dude. I got my 3090 a couple of days ago and I have a Samsung 80T 65inch. I bought a Belkin Ultra HD High Speed HDMI Cable for $100 at JB. Connected 3090 to 80T VIA HDMI PORT 4 - Took a minute to gain signal. Went on my pc (Windows 10) - Display Settings - Clicked on the display - HDR ON - Display Resolution 4096 x 2160 or 3840 x 2160 - Advanced Display Settings - Refesh Rate 120.000 Hz. Then (Went to my Samsung 80T Settings) Turned on Game Mode. Works like a charm. Here is the HDMI I used as a link - https://www.jbhifi.com.au/products/belkin-ultra-hd-high-speed-hdmi-cable-2m

[Denox78]

Hi Michael,

I just bought a QLED 50Q80B 2022 TV coupled with an RTX 3070 but I can't get the 3840x2160 120HZ in NVIDIA Control Panel or Windows

I'm using a brand new HDMI 2.1 certified cable

Can you please help me how did you manage to make it work with CRU utility please ?

What settings did you use ?

Thanks