I need help choosing a gaming mother board for my first time build pc. I don't understand what the MHz does on mother board, some say they are OC and some are higher MHz, how would that affect my gaming performance ? Also Im going to use intel 4770k and want the option to use 2 graphics card in the future. I just don't want to spend a lot of money on one if I don't have to. The only thing that is really important to me also is that the mother board have built in surround sound with fiber optic output. Someone please help me out.