CORSAIR CMX6GX3M3A1600C9 XMS3 6GB (3x2GB) DDR3 1600 MHz (PC3 12800) Desktop Memory 1.65V Each memory module is individually tested to give you Peace of Mind that it Will Not Fail, Guaranteed! 6GB XMS3 Classic Memory Kit for use with Triple Channel DDR3 Intel X58 motherboards and Core i7 processors Perfect upgrade to Compliment Windows 7 and it's great for Gamers who want more speed out of their systems Lifetime Warranty Backed by Corsair  A respected name with a passion for great service and support 6GB 3 x 2GB PC3-12800 1600MHz 240-pin DDR3 Timing: 9-9-9-24 1.65v Memory Type: DDR3; Speed: 1600MHz