Intel Core 2 Quad Q9550 2.83 GHz 1333MHz 12 MB Quad-Core CPU Processor SLB8V SLAWQ LGA 775 Frequency:2833 MHz, Bus speed:1333 MHz. Clock multiplier:8.5, Data width:64 bit, 4 cores. L2 cache:2 x 6 MB, Thermal Design Power:95 Watt. Warranty:3 months, fully tested in perfect working condition. Please consult us whether support your motherboard before buying.