120hz led monitor only showing 60hz

[phippsy]

just bought a samsung S23A700D led monitor and it says its real 120hz but my screen resolution and radeon graphics card is only showing 60hz does anyone know why

 

[Kari]

use Dual-link DVI cable, hdmi wont work at 120Hz...

 

[phippsy]

I am using dvi cable

 

[JackNaylorPE]

Using right cable ? As said above only option is DL DVI ... SL DVI ain't gonna work ..... see pic below

http://www.interfacebus.com/Digital-Visual-Interface-Description-DVI-Bus.html

 

[Sunius]

Regular DVI or dual-link DVI?

 

[phippsy]

Both ends are Dvi-d

 

[treefrog07]

Make sure you have dual-link DVI cable attached to the dual-link output connector on the card.

 

[phippsy]

Make sure you have dual-link DVI cable attached to the dual-link output connector on the card.

what do u mean ?

 

[wolfram23]

What hardware do you have, anyway?

 

[4745454b]

Look at Jacks link if you don't know the difference between SL and DL DVI cables.

I actually get the feeling the issue is with the AMD card and not the cable. I think I remember a different thread where AMD cards are "locked" to 60hz.

 

[bystander]

Look at Jacks link if you don't know the difference between SL and DL DVI cables.

I actually get the feeling the issue is with the AMD card and not the cable. I think I remember a different thread where AMD cards are "locked" to 60hz.

My 6950/70's worked just find with DL-DVI at 120hz.

Both ends are Dvi-d

I assume that is not the DL-DVI-D. DVI-D comes in both single and dual link, and it must be dual link cables for it to work at 120hz.

 

[a4mula]

The S23A750D only outputs 120hz via Displayport. Hope you own AMD.

 

[treefrog07]

what do u mean ?

Plug the DVI Dual Link cable into the port on the left side of the rear panel of the GPU.

Look at the GPU's output panel in the back of your system - plug the cable into the left DVI port.

edited here: see my configuration, I'm running two Samsung monitors: a 60Hz and a 120Hz on crossfired HD 4870s.

 

[bystander]

The S23A750D only outputs 120hz via Displayport. Hope you own AMD.

According to the specs, the monitor has a dual link DVI-D connection. He did not list that monitor, he listed the 700 model. You just need the right cables: http://www.samsung.com/africa_en/consumer/pc-peripherals-printer/monitors/led/LS23A700DS/XA/index.idx?pagetype=prd_detail&tab=specification

 

[4745454b]

My 6950/70's worked just find with DL-DVI at 120hz.

For my own education since what driver? It might have also been an issue with the 5xxx cards. (Unless those worked as well.) I'm going from memory from an older thread, so I could be wrong/mistaken.

 

[bystander]

It was working a couple months ago, maybe 11.11 or 11.10.

 

[phippsy]

Got it working thanks all

 

[duzn]

The S23A750D only outputs 120hz via Displayport. Hope you own AMD.

I got this monitor and using the DP cable with a DP -> miniDP adapter because my 6950s dont got regular DP, does this affect the refresh rate?

It says 120hz in my options, but it doesn't really seem like it. also it only selects 120hz Vertical sync turned ON, in fullscreen, no windowed mode. If I use windowed mode VS on, it caps out at 60 fps, but when I choose fullscreen, it caps at 120hz.