HP Compaq dx2400, 3.16 GHz, Intel® Core™2 Duo, 2 GB, 250 GB, DVD Super Multi, Windows Vista Business HP Compaq dx2400. Processor frequency: 3.16 GHz, Processor family: Intel® Core™2 Duo, Processor model: E8500. Internal memory: 2 GB, Internal memory type: DDR2-SDRAM. Total storage capacity: 250 GB, Card reader integrated, Optical drive type: DVD Super Multi. Discrete graphics card model: Intel® GMA 3100. Operating system installed: Windows Vista Business. Chassis type: Micro Tower. Product type: PC. Weight: 22.5 lbs (10.2 kg)