"Many Z68 motherboards also will have a power switching feature for graphics cards. Basically with this motherboard you can run both the integrated Intel graphics unit inside the processor, but you can also install a dedicated graphics card. The implementation LucidLogix Virtu switches in-between the two GPUs based on your need.
So as example, in Desktop mode you'd be utilizing the Intel IGP whereas you startup a Game your Radeon of GeForce graphics card will kick in. The idea here is to use the best of both worlds while consuming as little power as possible."
Asrock Gen 3 it is.