Lenovo ThinkCentre A55, 2.13 GHz, Intel® Core™2 Duo, 2 GB, 160 GB, DVD-RW, Windows Vista Business Lenovo ThinkCentre A55. Processor frequency: 2.13 GHz, Processor family: Intel® Core™2 Duo, Processor model: E6420. Internal memory: 2 GB, Internal memory type: DDR2-SDRAM. Total storage capacity: 160 GB, Optical drive type: DVD-RW. Discrete graphics card model: Intel® HD Graphics 3000. Operating system installed: Windows Vista Business, Operating system architecture: 32-bit. Power supply: 280 W. Chassis type: Tower. Product type: PC. Weight: 22 lbs (10 kg). Product color: Black http://compreviews.about.com/od/budgetdesk/gr/ThinkCentreA55.htm Lenovo ThinkCentre A5510/26/06 – Compared to most of the processors used in todays budget desktops, the Lenovo ThinkCentre A55 has an ancient processor. While the Intel Pentium 4 541 was once a high end processor, it has been eclipsed by even the lo...