1GB DDR2 667Mhz Dimm OptiPlex 320 Mini Tower MemoryRAM, Memorystock Part No: 727ms-727
1GB 1024MB 667MHz DDR2-667 PC2-5300, 240p DIMM, 1.8v. These are usualy used in dual channel, please Order Qty 2 for Dual Channel use.. Compatible memory for OptiPlex 320 Mini Tower