Question Issue Setting 144Hz Refresh Rate with Gigabyte M27Q Monitor and Ryzen 9 7900X iGPU

[simoelq]

Hello everyone,

I have been using a Gigabyte M27Q QHD monitor with my laptop for quite some time without any issues. However, I recently built a new PC and encountered a problem with the monitor's refresh rate settings.

My new PC setup consists of a Gigabyte X670 Aorus Elite AX motherboard and I am currently utilizing the integrated graphics (iGPU) of my Ryzen 9 7900X processor, as I have not yet purchased a dedicated graphics card.

The problem arises when I attempt to set the refresh rate to 144Hz on this new setup. Upon selecting the 144Hz option, the screen momentarily goes black and then turns back on, but the refresh rate remains at 120Hz instead of the desired 144Hz setting.

To troubleshoot the issue, I have taken the following steps:
- Updated all drivers, including the graphics drivers, to their latest versions.
- Ensured that the motherboard's BIOS is updated to the latest version.

Despite these efforts, I have been unable to successfully apply the 144Hz refresh rate. It is important to note that when I connect the monitor to my laptop using the same HDMI cable, I can achieve the desired 144Hz refresh rate without any problems.

I would greatly appreciate any suggestions or solutions that can help me resolve this issue. Thank you in advance for your assistance!

Note: Please provide any relevant information or additional troubleshooting steps that may aid in resolving this problem.

 

[thestryker]

Does your computer perhaps have HDR on? That's the only thing I can think of which would cause this type of issue. There isn't any hardware limitation that I'm aware of which would cause this to happen

 

[CelicaGT]

Haven't been able to find anything concrete, but since max refresh at 4k is 60Hz, I'd hazard a guess that 120Hz is the max for QHD.

 

[thestryker]

HDMI 2.0 is 18gbps which is basically 4k/60 8 bit. 2560x1440 144hz 8 bit should need around 16gbps so that is not the limitation here which is why it works on the laptop. This is why I asked about HDR as 10 bit would be limited to 120hz.

 

[CelicaGT]

HDMI 2.0 is 18gbps which is basically 4k/60 8 bit. 2560x1440 144hz 8 bit should need around 16gbps so that is not the limitation here which is why it works on the laptop. This is why I asked about HDR as 10 bit would be limited to 120hz.

In regards to my comment, I should have mentioned that these limitations are for the iGPU, as per AMD.