Good to know. He's decided to go ahead and go for 2x4GB 1600 even though it costs more (he's building this at some other website because it's about $100 more than him doing it all himself, and his mom can get a 1% loan for that place, so he can bank the cash for rent or something, so building himself is not an option). Then he can take it to Bulldozer with him if he ever upgrades.