I just thought I'd post this because I recently got this working on my computer, & nobody seems to be discussing this anywhere hardly. Anyway, the steps to turn on LucidLogix Virtu MVP for Asus z77 motherboard users:
1.) Go into BIOS
2.) Go to the Advanced page, just like when you OC'd your CPU
3.) Click on the Advanced tab at the top
4.) Under
"System Agent Configuration", make sure to Enable the "iGPU MultiMonitor"
5.) If you're using an AMD Radeon Card or playing Battlefield 3, make sure go to
http://www.lucidlogix.com/ and download the latest drivers.
Here's a chart of what you can expect in terms of performance boost, for those who like charts: http://www.hardwaresecrets.com/article/Virtu-Universal-MVP-Review/1548/
With Vsync turned off, I'm seeing about a +10% boost in FPS in Skyrim, with no tearing, surprisingly. Apparently, Virtu MVP has some kind of Vsync simulator that lets you get higher FPS without having to worry about tearing. Enjoy!