Crucial 16Gb Kit (8Gbx2), 240. Pin Dimm, Ddr3 Pc3. 12800 Memory Module 16 Gb (2 X 8 Gb) Ddr3 Sdram 1600 Mhz Ddr3. 1600/Pc3. 12800 1.50 V Ecc Registered 240. Pin Dimm Product Type: Memory/Ram Modules