Damonstea, it looks like there is a compatibility issue between the X79 chipset and the RST or RSTe software.
We tried to install it loading the F6 drivers but we were not able to. This problem has been already escalated to our engineering team
The correct version of this software that you need to install on the board is the RSTe V 3.5. The RSTe contains the C600 chipset.
This thread has additional information, just in case you would like to read it. https://communities.intel.com/thread/37403?start=15&tstart=0
If I have any information I will let you know.