Intel® Pentium® Intel Pentium Lenovo ThinkStation E20, 2.8 GHz, Intel® Pentium®, G6950, 2 GB, DVD-RW, Windows 7 Professional Lenovo ThinkStation E20. Processor frequency: 2.8 GHz, Processor family: Intel® Pentium®, Processor model: G6950. Internal memory: 2 GB, Internal memory type: DDR3-SDRAM, Memory clock speed: 1333 MHz. Optical drive type: DVD-RW. On-board graphics card model: Integrated. Operating system installed: Windows 7 Professional. Power supply: 280 W. Chassis type: Tower. Product type: Workstation. Weight: 11.2 kg. Product color: Black