AMD A520 AMD Socket AM4 for 3rd Gen AMD Ryzen and 3rd Gen AMD Ryzen with Radeon Graphics Processors DDR4 4600(O.C.)/ 4400(O.C.)/ 4000(O.C.)/ 3866(O.C.)/ 3733(O.C.)/ 3600(O.C.)/ 3466(O.C.)/ 3333(O.C.)/ 3200/ 3000/ 2800/ 2666/ 2400/ 2133 MHz, Un-buffered Memory