Intel Core 2 Quad Q9450 2.66GHz 1333MHz 12MB Socket 775 Quad-Core CPU - CPU ONLY Intel Core 2 Quad Q9450 2.66 GHz 1333 MHz 12 MB Socket 775 Quad-Core CPU General Features: Intel Core 2 Quad Processor Q9450 2.66 GHz CPU Speed 1333 MHz Bus Speed 12 MB L2 Cache Socket 775 0.85V - 1.3625V VID Voltage Range Quad Core Enhanced Intel Speedstep Technology Intel EM64T Intel Virtualization Technology Enhanced Halt State (C1E) Execute Disable Bit Intel Thermal Monitor 2