HP dc7900, 3 GHz, Intel® Core™2 Duo, 2 GB, 160 GB, DVD Super Multi, Windows XP Professional HP dc7900. 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: 160 GB, Optical drive type: DVD Super Multi. Discrete graphics card model: Intel® GMA 4500M. Operating system installed: Windows XP Professional. Chassis type: SFF. Product type: PC. Weight: 18.7 lbs (8.5 kg). Product color: Black http://www.hardwaregeeks.com/index.php/GadgetBlog%20%20/comments/review_hp_compaq_ultra_slim_desktop_pc_dc7900/ Back in August 2008, I reviewed the dc7800 and since then HP has updated the 7800 and have come out with the 7900, while HP didn’t make any changes to the design they have upgraded the CPU from an Intel Core 2 Duo E6550 to a E7300 and it’s also availab...