The new AMD Athlon II X2 255 is a 3.1GHz Dual Core Processor from AMD.The new AMD Athlon II X2 255 sports 2MB L2 cache and has 65W TDP.It is a socket AM3 processors with support to both DDR2 memory and DDR3 memory. It will run with HyperTransport 3.0, for increased processor-to-system bandwidth and the quickest transfer speeds possible.