Lenovo ThinkCentre A51, 3,06 GHz, Intel® Pentium® 4, 0,5 GB, 80 GB, DVD-ROM, Windows XP Professional Lenovo ThinkCentre A51. Processor frequency: 3,06 GHz, Processor family: Intel® Pentium® 4, Processor model: 524. Internal memory: 0,5 GB, Internal memory type: DDR2-SDRAM. Total storage capacity: 80 GB, Optical drive type: DVD-ROM. Discrete graphics card model: Intel® GMA 900. Operating system installed: Windows XP Professional. Power supply: 200 W. Product type: PC. Weight: 6,4 kg