HP xw4400 + 2xL1955 Flat Panel Monitor, 1.86 GHz, Intel® Core™2 Duo, 1 GB, DDR2-SDRAM, Windows XP Professional HP xw4400 + 2xL1955 Flat Panel Monitor. Processor frequency: 1.86 GHz, Processor family: Intel® Core™2 Duo. Internal memory: 1 GB, Internal memory type: DDR2-SDRAM. Operating system installed: Windows XP Professional. Power supply: 460 W. Product type: Workstation. Weight: 39.7 lbs (18 kg)