4GB DDR3 PC3-12800 Dual Channel DIMM Kit
Patriot Memory 4GB DDR3 PC3-12800 Dual Channel DIMM Kit, 4 GB, 2 x 2 GB, DDR3, 1600 MHz
Patriot Memory 4GB DDR3 PC3-12800 Dual Channel DIMM Kit. Internal memory: 4 GB, Memory layout (modules x size): 2 x 2 GB, Internal memory type: DDR3, Memory speed: 1600 MHz, CAS latency: 9