If your 780 is a newer GK110b revision, you will need to use the web driver from now on. If you removed your 580 and put the 780 in it's place, you will need to delete the SSDT for the 580 and replace it with a Kepler SSDT.
My GTX780 arrived, I was trying to find out if it is a GK110b but without success. I would like to try to change it ...but I am afraid of breaking the system, which works great now
I'll try to describe the steps I am going to follow:
Mount the EFI partition
Delete EFI/Clover/ACPI/patched/DSDT.aml
Shut down
Install GTX780 in Slot 1
Start up and boot to Clover
Press F4 to make a new DSDT
Restart
Boot to desktop (in here I probably have to run Auto DSDT app, Do I?)
Replace EFI/Clover/ACPI/Patched /
SSDT-1.aml (GTX 580)
with
ASUSX79Files/Postinstall/2 ACPI/NVIDIA Kepler (4port) HDMI GPU SSDT/
SSDT-1.aml (GTX780)
Download appropriate Web driver from NVIDIA website
Install
restart and it should work
I have a backup of OS X on a separate drive which I have booted from just to be safe. In case something goes wrong I can put GTX 580 back and roll back.
Thanx