They are all about the same, though the Asus and Chanitek boards have "special" sound drivers with extra features the Nvidia reference drivers don't give you but the hardware is still the same. Make sure you get a board with the MPC-T and not just the MPC. Basically, get a deluxe version of which ever board you want to buy otherwise you may end up with just plain old Realtek or C-media sound. And you don't want that.