Elpida 4GB DDR3 RAM 1600MHz PC3-12800 240-Pin DIMM Elpida 4 GB DDR3 RAM PC3-12800 240-pin DIMM General Features: 4 GB DDR3 RAM PC3-12800 1600 MHz 2Rx8 1.5V 16-chip 240-pin Regulatory Approvals: UL