2GB FB-DIMM 240-pin - DDR2 - 800 MHz / PC2-6400 - CL5 - 1.8 V - Fully Buffered - ECC Axiom 2gb Ddr2 Sdram Memory Module - 2gb - 800mhz Ddr2-800/pc2-6400 - Ecc - Ddr2 Sdram - 240-pin Dimm