Does not contain "conflict minerals": tantalum, tin, tungsten, and gold. Y Legacy Intel® Core™ Processor Intel Core i3-3xxx Lenovo ThinkCentre Edge 72, 3,3 GHz, Intel® Core™ i3, 4 GB, 500 GB, DVD-RW, Windows 7 Professional Lenovo ThinkCentre Edge 72. Processor frequency: 3,3 GHz, Processor family: Intel® Core™ i3, Processor model: i3-3220. Internal memory: 4 GB, Internal memory type: DDR3-SDRAM, Memory clock speed: 1600 MHz. Total storage capacity: 500 GB, Storage media: HDD, Optical drive type: DVD-RW. On-board graphics card model: Intel® HD Graphics 2500. Operating system installed: Windows 7 Professional, Operating system architecture: 64-bit. Power supply: 180 W. Chassis type: SFF. Product type: PC