About This File
Kexts for GV-R785OC-1GD which is Gigabyte 7850 OC 1GB.
Install kexts using Kext Utility.
Edit your DSDT and using the provided txt file. This guide will get you started:
Add DTGP method at the top of your DSDT otherwise it will not be found. Search Google for "DTGP does not exist".
Change the name of the device you added the GFX0 and HDAU to from whatever it is (mine was PCE2) to PEGP (Find/Replace All).
Compile and save DSDT to /Extra.
If you want HDMI audio, install a patched AppleHDA for one of the ALC codecs.
Boot with GraphicsEnabler=No
If audio is choppy on AMD systems, open terminal and type "yes > /dev/null" and press enter. Leave terminal open and audio should be working fine. There may be other ways of doing this.
Please leave feedback as to whether this works or does not work for you. I have not plugged into the DVI port yet so let me know.