Workarounds for video playback issues with legacy drivers:. Legacy drivers may have issues with HDCP and video acceleration with the patch. Simply run the patcher again after installing the new driver. Unpatching is not required before upgrading drivers. To restore the unpatched driver, run the patcher again and click "Yes" to restore from backup. You can then add higher refresh rates using Custom Resolution Utility (CRU). If a limit is not found or if multiple matches are found, the patcher needs to be updated. 
If all limits are found, click "Yes" to patch and sign. (If you only need the BIOS signature patch, rename it to atikmdag-patcher-bios.exe first.) 
It can be used with future versions if it finds the limits you need.
Version 1.4.12 is compatible with Catalyst 11.9 to Adrenalin 21.9.2. Dual-GPU cards such as the 7990 will not work properly at higher pixel clocks. It will not work properly with more than two cards. This is only possible with cards that have two connectors. Older cards require two CrossFire bridges if the pixel clock is greater than 300 MHz. 
R9 285/290/290X/295X2 and newer cards can handle higher pixel clocks without CrossFire bridges. If you find my software useful, please consider supporting me through Patreon: I would like to continue providing updates and work on new ideas, but I need your support. AMD/ATI Pixel Clock Patcher modifies the AMD/ATI video driver to allow higher resolutions and refresh rates by removing the 165 MHz pixel clock limit for single-link DVI and HDMI, the 330 MHz limit for dual-link DVI, and the 400 MHz limit for VGA.ĭownload: atikmdag-patcher-1.4.12.zip - Source: atikmdag-patcher-1.4.12-src.zipĬreating and maintaining software is a lot of work, and I have provided updates and support for free over the years.
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