I want to try this on my ivy bridge 3770 integrated gpu and mine with two 7970 cards. I read that the 7000 series cards don't require dummy plugs. There should be no software needed to run integrated graphs under Win7, right?
No cards need dummy plugs. It's bollocks, and has been for nearly 2 years. People who even think dummy plugs are the dummies.
As I said months ago in this thread that I'm running a pair of 7950 for mining and the HD4000 video out of my i3-3225. Set the BIOS to assign priority to the Intel video, boot in to Windows, install the Intel drivers, then the ATI drivers, job done.
Tested with three different motherboards (Asus P8B-WS C206 chipset, MSI B75IA-E33 B75 chipset, Asus P8H77-I H77 chipset) and three different CPU (G620, i3-2100, i3-3225).