I previously mentioned this patch on the forum, but since I just made it public it is time to make a separate thread about it. Who is this for? 1) You want to overclock your display 2) You want to drive a 4K display/projector from your Mac *** I just added 10.8.5 support and I published my work on Google Code. Documentation and download links are here: http://code.google.com/p/mac-pixel-clock-patch/wiki/Documentation Let me know if it does work or does not work for you. Also let me know if your OS X version or video card is not supported - I might be able to add it in. AMD/ATI video cards support is likely possible, I need testers! Cheers!