You'll appreciate the full-featured functionality of the HP Pavilion a6457c Refurbished Desktop PC. An AMD Phenom Triple-Core Processor 8400 2.1GHz processor and 4 GB of DDR2 SDRAM provide the power you need to multitask with ease! Microsoft Windows Vista Home Premium comes pre-installed with the HP KN228AA Refurbished Desktop PC. A keyboard and mouse are also included. The 500 GB SATA hard drive satisfies your thirst for more storage capacity so you've got plenty of space for music, games, photos, and other critical data. Access and burnCD and DVD media with ease with the SuperMulti DVD±RW drive.