AMD Phenom II X4 840T 2.9 GHz 95W Quad-Core CPU Processor HD840TWFK4DGR Socket AM3 Frequency:2.9GHz, Bus speed:2000 MHz HyperTransport link (4 GT/s). Clock multiplier:14.5, Sockets: Socket AM2+, Socket AM3, 4 cores. L2 cache:4 x 512 KB, L3 cache: 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.