Centauri Computer Systems EPSILON - Mini-PC small business, thin client, or HTPC solution - Intel Celeron N2807, 8 GB RAM, 500 GB Hard Drive, integrated Intel HD graphics Intel Celeron N2807 @ 1.58GHz Processor 8GB 204-Pin DDR3 SO-DIMM 1333 (PC3L 10600) Memory 500GB 5400 RPM Hard Drive Integrated Intel HD graphics Microsoft Windows 7 Home Premium SP1 64-bit