Corsair CMSO4GX3M1A1333C9 Kit, Dual Channel, Memory DDR3, Memory Size 4GB Kit (1 x 4GB), Tested Latency 9-9-9-24, Tested Voltage 1.5V, SPD Speed 1333MHz, SPD Voltage 1.5V, Speed Rating PC3-10600 (1333MHz), Compatibility Intel 390,Intel X299,AMD 400 Series,AMD X570,AMD X399, Pin 204. Adding more RAM is a qucik and effective way to improve your system performance, as having more RAM often means more responsive multitasking and faster program switching.