Corsair CMV4GX3M1A1600C11 4GB (1 x 4GB) 240-Pin DDR3 1600Mhz PC3 12800 Desktop Memory 1.5V Density: 4GB (1x4GB) Speed: 1600MHz Timing: 11-11-11-30 Type: DDR3 Format: DIMM Pin Out: 240 Pin Voltage: 1.5V. Memory Type: DDR3L; Speed: 1600MHz Limited Lifetime Warranty