MP Green Business PC T4500. Processor clock speed: 2.3 GHz, Processor family: Intel Pentium Dual-Core, Processor model: T4500. Internal memory: 2 GB, Maximum internal memory: 4 GB, Internal memory type: DDR2-SDRAM. Total storage capacity: 320 GB, Hard drive rotational speed: 5400 RPM, Hard drive interface: Serial ATA II. Maximum graphics adapter memory: 1024 MB. Operating system installed: Windows 7 Professional