Core 2 Quad Only Seeing 2 cores | Tom's Hardware Forum
Dell Optiplex 760 CPU upgrade - Page 2 - Dell Community
HP Pavilion p6340f Refurbished Desktop PC - Intel Core 2 Quad Q8400 2.66GHz, 8GB DDR3, 1TB HDD, DVDRW, Windows 7 Home Premium 64-bit at TigerDirect.com
Overclocking at Stock Voltages - The Core 2 Quad Q8400: Intel's $183 Phenom II 940 Competitor