ASUS RS161-E4/PA2 AMD Opteron Server, 2.2 GHz, DDR2-SDRAM, 0 GB, Serial ATA, Rack (1U) ASUS RS161-E4/PA2 AMD Opteron Server. Processor family: AMD Opteron, Processor frequency: 2.2 GHz. Internal memory type: DDR2-SDRAM. Total storage capacity: 0 GB, HDD interface: Serial ATA. Chassis type: Rack (1U)