Hard Drive HDD HP ProDesk 405 G1 MT, 1.5 GHz, AMD A4, 4 GB, 500 GB, DVD Super Multi, Windows 7 Professional HP ProDesk 405 G1 MT. Processor frequency: 1.5 GHz, Processor family: AMD A4, Processor model: A4-5000. Internal memory: 4 GB, Internal memory type: DDR3-SDRAM, Memory clock speed: 1600 MHz. Total storage capacity: 500 GB, Storage media: HDD, Optical drive type: DVD Super Multi. On-board graphics card model: AMD Radeon HD 8330. Operating system installed: Windows 7 Professional, Operating system architecture: 64-bit. Power supply: 300 W. Chassis type: Micro Tower. Product type: PC