4K 120hz Problem

[AntiTrust]

TLDR: did I get ripped off on my HDMI cable and how can I know for sure    

Cable Link  

 

I have a new TV a Samsung QN90A which supports resolutions up to 4K 120hz on the HDMI 2.1 connection. I bought a cable that says it supports HDMI 2.1 4K @ 240hz but I cant even get it to run 4K 120hz (see the attached screenshot) the resolution doesn't appear in the list. 

 

When I try to make a custom resolution (4K 120hz) the screen goes black and doesn't work. 

 

Is there anything I should be trying before I run out and spend $100 on an HDMI certified cable? I have had good luck with cable matters cables in the past, I bought a USB C cable for my oculus quest 2 that worked perfectly and saved me a bunch of money. People in the reviews seemed to be able to make it work too. 

 

thanks 

[dizmo]

Your title should be "Massively 1st world problem."

 

Jokes aside, you might just have a defective cable. It should work. I'd just return it and get another one. If that doesn't work, then I'd look at other cable options, but there's no reason to be spending $100 on one.

[igormp]

Are you using the 2080 from your signature? If so, the 2000 lineup doesn't support HDMI 2.1, so the max you can do is 4k60hz, try to see if this works.

[AntiTrust]

15 minutes ago, igormp said:

Are you using the 2080 from your signature? If so, the 2000 lineup doesn't support HDMI 2.1, so the max you can do is 4k60hz, try to see if this works.

Yeah I am trying to use my 2080 for this, never even considered that my graphics card wouldnt support hdmi 2.1 but your right it doesnt

 

edit: going to try a displayport 1.4 to HDMI 2.1 cable from cable matters wish me luck lol 

 

 

[AntiTrust]

 

 

this cable worked for my 2000 series card,  4k 120hz and even had working audio

 

just for anyone who might come across this on a google search one day