Specifications: Mfr Part Number: BX80580Q9400, Process Type: Intel Core 2 Quad Processor Q9400, Frequency: 2.66 GHz, FSB: 1333 MHz, Cache: 6 MB, Process: 45 nm, Socket: Socket 775, Power Consumption: 95 W, Package: Retial, This processor is a Quad Core Processor, This processor supports Intel SpeedStep Technology, This processor supports Intel Extended Memory 64 Technology (EM64T), This processor supports Intel Virtualization Technology, This processor supports Enhanced Halt State (C1E), This processor supports Execute Disable Bit Capability, This processor supports Intel Thermal Monitor 2