Intel Z390 Build in Intel 9th/8th Gen Intel Core, Pentium Gold and Celeron Processors DDR4 4800(O.C.)/ 4700(O.C)/ 4600(O.C)/ 4500(O.C)/ 4400(O.C)/ 4266(O.C.)/ 4133(O.C.)/ 4000(O.C.)/ 3866(O.C.)/ 3600(O.C.)/ 3466(O.C.)/ 3400(O.C.)/ 3333(O.C.)/ 3300(O.C.)/ 3200(O.C.)/ 3000(O.C.)/ 2933(O.C.)/ 2800(O.C.)/ 2666/ 2400/ 2133 MHz Non-ECC, Un-buffered Memory