Corsair CML8GX3M2A1600C9 Vengeance 8GB (2x4GB) DDR3 1600 MHz (PC3 12800) Desktop Memory 1.5V Density: 8GB (2x4GB Module) Speed: 1600MHz Timing: 9-9-9-24 Type: DDR3 Format: DIMM. SPD speed 1333MHz Pin Out: 240 Pin Voltage: 1.5V. Memory Type: DDR3; Speed: 1600MHz Lifetime Warranty