ADATA 2GB, DDR2, 800Mhz, PC6400, 2 GB, DDR2, 800 MHz, 240-pin DIMM ADATA 2GB, DDR2, 800Mhz, PC6400. Internal memory: 2 GB, Internal memory type: DDR2, Memory clock speed: 800 MHz, Memory form factor: 240-pin DIMM