Custom Resolution Utility (CRU)

[ToastyX]

(02-14-2020 08:32 PM)benoe Wrote:  Hi, I have an AOC C24G1 (AOC2401 - 24G1WG4) monitor and an RX 5700 card and I'm trying to make the RAM clock frequency lower when idle. I have learnt, that at default settings with hdmi, I can set the refresh to 100Hz to achieve this, with displayport 120Hz also works. CRU Display Properties reports 300MHz as Max pixel clock with hdmi and 330 with displayport.

I'm trying to adjust settings with CRU, but I have issues:
I cannot find the fullhd 120Hz settings to edit (to make 120Hz work with hdmi as well) Detailed resolutions list only 60 and 144hz modes.
I cannot set up 144Hz to get the needed result, LCD standard setting provides black screen, adjusting the blanking lines manually sometimes works, but screen seems to be blurry even when the system reports 1080p resolution.

The 144hz resolution has 325Mhz pixel clock, standard sets this to 346.55Mhz. Is it possible that this monitor cannot go this high, and that's why I cannot set the standard setting? Or should I try with better cables maybe?

DisplayPort should be able to handle at least 360 MHz, but the monitor might not. You can keep the horizontal reduced and increase only the vertical blanking until it clocks down. If it won't display that correctly, then that's a monitor limitation.