Full Details from Amazon.com : http://www.amazon.com/gp/product/B000MNA082?tag=onigi-20
AMD Athlon 64 X2 Dual-Core 5600 2.8 GHz Processor Socket AM2
Increase your performance by up to 80 work or play with multiple programs without any stalling or waiting
28 GHz processor provides dual-core system capability in single-core system configurations
AMD64 core provides leading-edge performance for both 32-bit and 64-bit applications 2 MB L2 cache
Support for DDR2 SDRAM memory up to 128 GBs memory bandwidth
CoolnQuiet technology for quieter operation and reduced power requirements high-performance 89-watt power