Corsair CMV8GX3M2A1600C11 8GB (2 x 4GB) 240-Pin DDR3 1600Mhz PC3 12800 Desktop Memory 1.5V Density: 8GB Kit (2x4GB) Speed: 1600MHz Timing: 11-11-11-30 Type: DDR3 Format: DIMM Pin Out: 240 Pin Voltage: 1.5V. Memory Type: DDR3; Speed: 1600MHz Limited Lifetime Warranty