4 x DIMM, Max. 64GB, DDR4 3866(O.C.)/3800(O.C.)/3733(O.C.)/3600(O.C.)/3500(O.C.)/3466(O.C.)/3400(O.C.)/3333(O.C.)/3300(O.C.)/3200(O.C.)/3000(O.C.)/2800(O.C.)/2666(O.C.)/2400(O.C.)/2133 MHz