HP xw4600 Workstation, xw. Processor family: Intel Core 2 Duo, Processor clock speed: 3.16 GHz, Processor model: E8500. Internal memory: 2 GB, Internal memory type: DDR2, Maximum internal memory: 8 GB. Hard drive capacity: 500 GB, Hard drive interface: Serial ATA, Hard drive rotational speed: 7200 RPM. Operating relative humidity range: 8 - 85 %, Operating temperature range (T-T): 5 - 35 °C, Storage temperature range (T-T): -40 - 60 °C. Power requirements: 475 watts wide-ranging, active Power Factor Correction, 80 Plus Efficient, Power supply: 475 W