Kingston Technology System Specific Memory 1GB DDR400, 1 GB, 1 x 1 GB, DDR, 400 MHz, 184-pin DIMM Kingston Technology System Specific Memory 1GB DDR400. Internal memory: 1 GB, Memory layout (modules x size): 1 x 1 GB, Internal memory type: DDR, Memory clock speed: 400 MHz, Memory form factor: 184-pin DIMM