For those who are looking to upgrade to to the Sandy Bridge -e chips (3930k, 3960k,3820). Here's some thoughts on my recent build.
Asus p9x79ws motherboard
Core i7 3930 k
Cubase 6.05
Windows 7 x64
Steinberg mr816x (running at 256 audio latency)
I couldn't get the Virus Ti software to install with any of the usb2.0 or usb3.0 ports on the back (i/o section) of the motherboard. These ports would never recognize the virus.
However, I was able to get the Virus TI operational using the onboard usb ports that are designed to attach to the front of the case and to breakout adapter cable. With these ports, the Virus is instantly recognized and performs flawlessly in Cubase 6.05
Since the motherboard comes with two onboard usb headers. I was able to get two usb ports to the front of the case and two usb to the back via the usb/esata adapter cable.
Haven't investigated the inability to use the back usb ports but I will try a pcie usb 2.0 card in the future.
But everything is running great. 
FYI for those looking to upgrade to these new boards (lga 2011) and chips.