HP xw4550 Workstation, xw. Processor clock speed: 2800 MHz, Processor family: AMD Opteron, Processor front side bus: 1000 MHz. Internal memory: 1024 MB, Internal memory type: DDR2, Memory slots: 4 DIMM. Hard drive capacity: 250 GB, Hard drive interface: Serial ATA, Hard drive rotational speed: 7200 RPM. Graphic adapter: Radeon X1250. Optical drive type: DVD±RW