Intel® Pentium® Intel Pentium HP Essential 500B MT, 3.2 GHz, Intel® Pentium®, 2 GB, 320 GB, DVD Super Multi, Windows 7 Professional HP Essential 500B MT. Processor frequency: 3.2 GHz, Processor family: Intel® Pentium®, Processor model: E5800. Internal memory: 2 GB, Memory clock speed: 1333 MHz. Total storage capacity: 320 GB, Optical drive type: DVD Super Multi. Discrete graphics card model: Intel® GMA 4500. Operating system installed: Windows 7 Professional, Operating system architecture: 64-bit. Power supply: 300 W. Chassis type: Micro Tower. Product type: PC. Weight: 22.5 lbs (10.2 kg). Product color: Black