If you ask a PC gamer about their preferred graphics cards for their gaming rigs, most of them will talk about Nvidia products. I myself have all the desktop computers that use Nvidia based GPU and one notebook computer that uses Nvidia. If you also have an Nvidia GPU in your PC, then you may be interested in unlocking the display resolution limits set by the Nvidia device drivers in Windows. A small program called Nvidia Pixel Clock Patcher can modify the Nvidia drivers installed in your Windows PC to remove the limits for the display resolution and the refresh rates.
Nvidia Pixel Clock Patcher is a standalone program that you can run without having to install anything. You can just double-click on the downloaded program atikmdag-patcher.exe and it will start analyzing the system for various device capabilities. It is worth mentioning that this program works only for Nvidia 5000 series or newer GPU chips. If you run this program on any system with older Nvidia GPU chips, then it will not work and show a message that your system is not supported.
When launched on a supported system, it will show you the information about the device driver and whether all types of limits are detected in the installed Nvidia device driver. It looks for DL-DVI limit, SL-DVI/HDMI limit, SL-DVI limit for DL-DVI, SLI limit, Fermi limit and the Fermi check. If you choose Yes in this dialog, then it will patch the driver files. After this you have to reboot your PC for the changes to take effect.
Upon reboot the new higher display resolutions may not appear by themselves, you will have to use another tool called Custom Resolutions Utility to add them. In this tool, you simply have to click on the Add button and enter the new higher resolution values which differ from system to system. Once again, you will need to reboot your PC for the changes to take effect.
In case you want to revert back to the original device driver, you can either download the Nvidia drivers for your system from the Nvidia website or run the Nividia Pixel Clock Patcher once again – this time it will ask you to restore the original files. The second option is much faster, but if it fails for any reason than you can always download the new version of the drivers from Nvidia.
You can download Nvidia Pixel Clock Patcher from https://www.monitortests.com/forum/Thread-AMD-ATI-Pixel-Clock-Patcher.