Question Refresh rate locked at 60Hz ?

[Shekhar5]

Hello friends, after many years again need help of this wonderful community. So I bought a new Samsung Odyssey G7 LS28AG7 claimed to have 144HZ refresh rate. I also have ZOTAC GeForce® GTX 1050 Ti . Monitor and GPU are connected with a DisplayPort cable provided with this new monitor.

Problem is that I cannot set refresh rate to 120 or 144 Hz in Windows' display settings, nor can I change refresh rate in Nvidia control Panel to 120/144Hz.
I can set 120/144Hz in monitor's OSD menu.
I can also set 120/144Hz both in Windows' display settings and Nvidia CP if I lower the resolution to 1440p or 1080p.

But I want 2160p@120/144Hz choice.

1. Is it because the DP cable provided with the monitor is not capable?
2. Is it GPU unable to deliver 4k@120/144Hz (Though GPU specs mentions DP 1.4)
3. Do I need to buy a VESA certified DP cable ?

Please help guys....

 

[kerberos_20]

gpu is capable of DP 1.4
check in your monitor which display port version is it running now
osd -> system -> displayport ver.

 

[Shekhar5]

gpu is capable of DP 1.4
check in your monitor which display port version is it running now
osd -> system -> displayport ver.

OSD says monitor running DP 1.4

 

[Shekhar5]

Had to use custom resolution in Nvidia Control Panel 3840*2160 at 120/144 Hz. Worked good, though colours changed from RGB to Ycbcr 422. Still trying to get RGB at 120Hz. 144Hz wont work for me as 1050ti doesn't support 144Hz.

 

[kerberos_20]

4k at 120/144hz under dp 1.4 uses compression, called DSC, first gpu from nvidia which uses DSC is rtx 2000, gtx 1650 also have DSC

 

[Shekhar5]

4k at 120/144hz under dp 1.4 uses compression, called DSC, first gpu from nvidia which uses DSC is rtx 2000, gtx 1650 also have DSC

Thanks for the input. I think I am gonna need latest GPU for DSC thing. Thread can be closed, I got the answers.