AMD Phenom II X4 905e Deneb 2.5 GHz Quad-Core CPU Processor HD905EOCK4DGI Socket AM3 2MB L2 Cache 65W Frequency:2500 MHz, Bus speed:667 MHz Memory controller, One 2000 MHz 16-bit HyperTransport link (4 GT/s). Clock multiplier:12.5, Data width:64 bit, 4 cores. L2 cache:4 x 512 KB, L3 cache:6 MB. Warranty:3 months, fully tested in perfect working condition. Please consult us whether support your motherboard before buying.