Hard Drive HDD HP Compaq dx7500 Microtower PC, 3 GHz, Intel® Core™2 Duo, 2 GB, 320 GB, DVD Super Multi, Windows Vista Business HP Compaq dx7500 Microtower PC. Processor frequency: 3 GHz, Processor family: Intel® Core™2 Duo, Processor model: E8400. Internal memory: 2 GB, Internal memory type: DDR2-SDRAM, Memory clock speed: 800 MHz. Total storage capacity: 320 GB, Storage media: HDD, Optical drive type: DVD Super Multi. Discrete graphics card model: Intel® GMA X4500HD. Operating system installed: Windows Vista Business. Chassis type: Micro Tower. Product type: PC. Weight: 10.2 kg