DELL OptiPlex 780 USFF, 3 GHz, Intel® Core™2 Duo, 2 GB, 160 GB, DVD-RW, Windows 7 Professional DELL OptiPlex 780 USFF. 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: 1333 MHz. Total storage capacity: 160 GB, Optical drive type: DVD-RW. Discrete graphics card model: Intel® GMA X4500. Operating system installed: Windows 7 Professional. Product type: PC. Weight: 3,2 kg. Product colour: Black