Custom Resolution Utility (CRU)

[petakpa1]

I would like to use my Asus MX299Q monitor in its native resolution (2560x1080@60Hz) with an old HD4650 AGP graphic card connected with HDMI-HDMI cable. Could someone help me how and what settings need to be applied in CRU?

The OS is Win7 32 bit. I use the v12.1 AGP hotfix Catalyst driver.

If I connect the graphic card to the monitor with a DVI-DVI cable I can set the 2560x1080 resolution both in window opening right click on desktop / screen resolution and AMD Vison Control Panel. The latter also tells me that monitor is connected with dual link DVI cable

If I use HDMI-HDMI cable I can set only 1920x1080 resolution!

As per my specification of my graphic card (https://www.gigabyte.com/Graphics-Card/GV-R465D2-1GI#sp) its max resolution is 2560x1600 in case of digital outputs like HDM & DVI. Furthermore I investigated that the version of graphic card HDMI connector is 1.3a thus even 2560x1440@75Hz resolution should be possible.

I also learnt from 1st post of this forum that old Radeon cards (like HD4650 is) HDMI is clocked only on 165 MHz which limits the output bandwith unless driver is pacthed. Of course I did the patch with AMD Pixel Clock Patcher which was successful, but I am still not able to set 2560x1080 nor in desktop/screen resolution neither in AMD Vision Control Panel(.
The max available resolution is still only 1920x1080 despite the successful patch.

Earlier I used this monitor with HDMI-HDMI cable connected to the HDMI port of Llano system (which has HD6550d GPU integrated into the APU), so I am sure that monitor can be used in 2560x1080 resolution with HDMI cable.

Could someone assist me what should be set in CRU to make available the 2560x1080 resolution?