Hard Drive HDD HP Pro XT283ES, 2.7 GHz, AMD Phenom II X6, 8 GB, 750 GB, DVD Super Multi, Windows 7 Professional HP Pro XT283ES. Processor frequency: 2.7 GHz, Processor family: AMD Phenom II X6, Processor model: 1045T. Internal memory: 8 GB, Internal memory type: DDR3-SDRAM. Total storage capacity: 750 GB, Storage media: HDD, Optical drive type: DVD Super Multi. Discrete graphics card model: NVIDIA® GeForce® GT 440. Operating system installed: Windows 7 Professional, Operating system architecture: 64-bit. Power supply: 300 W. Chassis type: Mini Tower. Product type: PC. Product color: Black