Dual channel or quad?

8 x DIMM, Max. 64GB, DDR3 2400(O.C.)/2133(O.C.)/1866/1600/1333/1066 MHz Non-ECC, Un-buffered Memory
Quad Channel Memory Architecture

In the specifications it pretty much says Quad channel so that's what you should get. The CPU is going to have a Quad channel controller.