Lenovo ThinkCentre A61, 2.7 GHz, AMD Athlon X2, 2 GB, 320 GB, DVD-RW, Windows Vista Business Lenovo ThinkCentre A61. Processor frequency: 2.7 GHz, Processor family: AMD Athlon X2, Processor model: 5200+. Internal memory: 2 GB, Internal memory type: DDR2-SDRAM. Total storage capacity: 320 GB, Optical drive type: DVD-RW. Discrete graphics card model: AMD Radeon X1300. Operating system installed: Windows Vista Business. Chassis type: Tower. Product type: PC. Weight: 24.3 lbs (11 kg). Product color: Black