AMD - My ASUS VG278 3D Monitor is locked at 60 hz when it should be 120 hz

[roflchips]

I recently bought an ASUS VG278 3D monitor which was designed for Nvidia, I don't plan on using the 3D, however it is supposed to be a 120 hz monitor but it will only use 60 hz under the CCC settings the highest refresh rate I can go to is 60 hz I am using a dual link dvi cable that came with the monitor but I can't seem to get it to work help would be appreciated.

[xeromist]

3 things need to work for 120Hz. The monitor needs to support it, the cable needs to support it, and the GPU needs to support it. Perhaps your GPU is not working in dual link mode.

We need to know what card you are using to troubleshoot further.

[KILLER_K]

You are simply using the wrong ports. Change to the correct dual link port and you will then have a 120Hz option in CCC. And also make sure the monitor driver is installed. Thanks

[OneshotK]

Use an display-port cable because i've read that even a Dual link DVI cable is not capable for 120 hz at 1080P. Dual DVI is only 120 hz capable till 720P (1280 x 720)

[xeromist]

OneshotK wrote:
Use an display-port cable because i've read that even a Dual link DVI cable is not capable for 120 hz at 1080P. Dual DVI is only 120 hz capable till 720P (1280 x 720)

Not true. I have a monitor sitting at home working at 1080p120 on dual link DVI. *HDMI* is limited to 720p120 (or 1080p60) by the current generation of HDMI processing chips. The HDMI 1.4 spec does allow for 1080p120 frame packing but only a handful of devices can do it at this point.

[OneshotK]

xeromist wrote:
Not true. I have a monitor sitting at home working at 1080p120 on dual link DVI. *HDMI* is limited to 720p120 (or 1080p60) by the current generation of HDMI processing chips. The HDMI 1.4 spec does allow for 1080p120 frame packing but only a handful of devices can do it at this point.

Okay a bit weird becuz someone I know must use an DP cable for 1920 x 1080 at 120 hz. He has HDMI 1.4 on his graphics card but even with an HDMI 1.4 cable he can only choose resolutions up to 720P (1280 x 720) at 120 hz, anything higher is 60 hz only with that HDMI cable.

[xeromist]

OneshotK wrote:
Okay a bit weird becuz someone I know must use an DP cable for 1920 x 1080 at 120 hz. He has HDMI 1.4 on his graphics card but even with an HDMI 1.4 cable he can only choose resolutions up to 720P (1280 x 720) at 120 hz, anything higher is 60 hz only with that HDMI cable.

Correct, this is a limitation of the processing chip so it doesn't matter what cable you use. Perhaps the confusion arises because 1080p120 is not required to be "1.4" even though the spec says it *could* be included. Many devices say they are 1.4 but only very few recent products can do 1080p120.