The motherboard supports "1600(O.C.)/1333/1066".
All the above memory is about the same price and I dont see the point in buying 1333Mhz when I can get 1600 or 2000Mhz and just downclock them.
I am certain I can get the 1600Mhz but not sure about the 2000Mhz I just want to make sure before I decide what to buy.