Z77 details are in the reviews, eg:
http://www.anandtech.com/show/5728/i...cs-and-biostar
There's some virtu stuff that's quite interesting if you want to further leverage the inbuilt GPU in a CPU, though graphics cards are beginning to do adaptive v-sync on their own anyway. There's also native SATA3 rather than having to use an auxillary chip on the board. That might mean speeds are a bit quicker/you can connect more devices, so it'd depend if you were likely to use USB 3 peripherals that actually take advantage of the boost over USB2.