Well Sata 6gb is going to become standard eventually, until a new version comes out so I guess it's good to be future proof. I havn't overclocked my 920, most people with them tend to though and get good results. I'm not sure about the 930, it's the newest i7 so i'd just search for some results that people have got when overclocking. Depending on how much your going to overclock you might want to get a cooler like the H-50 or something similar.