for the ram it all depends on how much money you want, all you need is 2 gigs, u will never use more than 2gigs in the first place and if you ever did then you would need a vry fast cpu. if u want to run 4 stick of ram at 1T then you can get the new dfi crossfire board, i dont know how they did it but i love them DONT BUY FROM EBAY! always go thru a reliable source