HP dx2450 Microtower, 2.2 GHz, AMD Sempron, 2 GB, 250 GB, DVD±RW, FreeDOS HP dx2450 Microtower. Processor frequency: 2.2 GHz, Processor family: AMD Sempron. Internal memory: 2 GB, Internal memory type: DDR2-SDRAM. Total storage capacity: 250 GB, Card reader integrated, Optical drive type: DVD±RW. Discrete graphics card model: NVIDIA GeForce 6150 SE. Operating system installed: FreeDOS. Power supply: 300 W. Chassis type: Micro Tower. Product type: PC. Weight: 22.5 lbs (10.2 kg)