DELL Optiplex 780 SFF, 2.93 GHz, Intel® Core™2 Duo, 2 GB, 250 GB, DVD-RW, Windows 7 Professional DELL Optiplex 780 SFF. Processor frequency: 2.93 GHz, Processor family: Intel® Core™2 Duo, Processor model: E7500. Internal memory: 2 GB, Internal memory type: DDR3-SDRAM, Memory clock speed: 1333 MHz. Total storage capacity: 250 GB, Optical drive type: DVD-RW. Discrete graphics card model: Intel® GMA 4500. Operating system installed: Windows 7 Professional. Power supply: 235 W. Chassis type: SFF. Product type: PC. Weight: 6.8 kg. Product colour: Black