Corsair CMV8GX3M2A1333C9 ValueSelect 8GB (2x4GB) DDR3-1333 (PC3-10666) 1.5V Desktop Memory Density: 8GB Kit (2x4GB) Speed: 1333MHz Timing: 9-9-9-24 Format: DIMM Pin Out: 240 Pin Voltage: 1.5V Lifetime Warranty. Memory Type: DDR3; Speed: 1333MHz