Size 4GB Kit (1 x 4GB) Performance Profilenone Fan Included No Memory Configuration Single Module Memory Type DDR3 Package Memory Pin240 Package Memory FormatDIMM Tested Voltage 1.35 SPD Voltage 1.35 Speed Rating PC3-12800 (1600MHz) SPD Speed 1333MHz Tested Speed 1600Mhz Tested Latency 11-11-11-28