HP 512MB DDR-200, 0.5 GB, 2 x 0.25 GB, DDR, 200 MHz, 184-pin DIMM HP 512MB DDR-200. Component for: PC/server, Internal memory: 0.5 GB, Memory layout (modules x size): 2 x 0.25 GB, Internal memory type: DDR, Memory clock speed: 200 MHz, Memory form factor: 184-pin DIMM, ECC