Corsair XMS3 4GB 1600mhz CAS 7 PC3-12800 240-pin DDR3 Triple Channel Memory Kit for Core i3, i5, i7 and   platforms 4 Not a kit (Single) DDR3 1600 (PC3 12800) 240-Pin DDR3 SDRAM CMX4GX3M1A1600C7 Single 4GB module for use in high performance for the Intel Core i3, i5, i7 and AMD platforms Voltage: 1.65V Speed: 1600MHz Timing: 7-8-7-20 Density: 4GB (1x4GB Module) Pin Out: 240 Pin Limited Lifetime Warranty Intel XMP (Extreme Memory Profile) support