AMD Phenom II X4 955 3.2 GHz 6MB Quad-Core CPU Processor HDZ955FBK4DGM Socket AM3 125W Frequency:3.2GHz, Clock multiplier:16, Sockets:Socket AM2+, Socket AM3. Bus speed:667 MHz Memory controller, One 2000 MHz 16-bit HyperTransport link (4 GT/s). 4 cores,L2 cache:4 x 512 KB, L3 cache:6 MB, Thermal Design Power:125 Watt. Warranty:3 months, fully tested in perfect working condition. Please consult us whether support your motherboard before buying.