i was going to make a media centre pc , with P5B Deluxe/WiFi-AP mobo, i have some ocz ram 850xt pe ( i know its a bit old) i was going to get e4??? series but now these e8???series look the buisness, will it fit in my board ? will it be worth the extra, i also have a x800 gto would i be able to use both my graphics cards on the board?