Corsair - Vengeance Memory single 4GB mo 1-Year Mfg Warranty Corsair CMZ4GX3M1A1600C9 Corsair CMZ4GX3M1A1600C9 4 GB (1 x 4 GB) - 1600 MHz DDR3-1600/PC3-12800 - Non-ECC - Unbuffered - 240-pin DIMM