Product Detail Box Contents - HP Pavilion Elite e9230f Desktop PC, HP USB optical mouse, HP optical keyboard; Software Bundle Intel Core 2 Quad Q8400 2.66GHz Processor 4MB L2 Cache, 1333MHz Front Side Bus 8GB PC3-8500 DDR3 RAM (4x 2GB) 1TB (1000GB) 5400RPM SATA Hard Drive Windows 7 Home Premium 64-bit, Microsoft Works 9, Microsoft Office Home and Student Edition 2007 60-Day Trial . The "C2Q 8400 8GB" is best product for you. We recommended C2Q 8400 8GB