TERRA 1009158, 3.2 GHz, Intel® Core™ i5, 4 GB, 500 GB, DVD-RW, Windows 7 Professional TERRA 1009158. Processor frequency: 3.2 GHz, Processor family: Intel® Core™ i5. Internal memory: 4 GB, Internal memory type: DDR3-SDRAM, Memory clock speed: 1333 MHz. Total storage capacity: 500 GB, Optical drive type: DVD-RW. Operating system installed: Windows 7 Professional. Power supply: 350 W. Chassis type: Midi Tower. Product type: PC. Product color: Black, Gray