Intel® Pentium® Intel Pentium DELL OptiPlex OP780MT-E333, 2.93 GHz, Intel® Pentium®, 2 GB, 320 GB, DVD-RW, Windows 7 Professional DELL OptiPlex OP780MT-E333. Processor frequency: 2.93 GHz, Processor family: Intel® Pentium®, Processor model: E6500. Internal memory: 2 GB, Internal memory type: DDR3-SDRAM, Memory clock speed: 1066 MHz. Total storage capacity: 320 GB, Optical drive type: DVD-RW. Discrete graphics card model: Intel 4500. Operating system installed: Windows 7 Professional. Power supply: 305 W. Chassis type: Mini Tower. Product type: PC. Weight: 11.7 kg. Product colour: Black