Lenovo ThinkCentre M58p, 3 GHz, Intel® Core™2 Duo, 2 GB, 250 GB, DVD Super Multi DL, Windows 7 Professional Lenovo ThinkCentre M58p. Processor frequency: 3 GHz, Processor family: Intel® Core™2 Duo, Processor model: E8400. Internal memory: 2 GB, Internal memory type: DDR3-SDRAM, Memory clock speed: 1066 MHz. Total storage capacity: 250 GB, Optical drive type: DVD Super Multi DL. Discrete graphics card model: Intel® GMA 4500. Operating system installed: Windows 7 Professional, Operating system architecture: 32-bit. Power supply: 280 W. Chassis type: SFF. Product type: PC. Product color: Black