Athlon II X4 640 is a desktop processor from AMD released on 11 May 2010, and it is in end-of-life production status now. It belongs to Athlon II X4 family and has a Propus architecture. This processor is built on AMD Socket AM3, and uses Gen 2 PCI express connection. 45 nm process is used in production.
Processor has 4 cores and 4 threads, with the base frequency of 3 GHz. It has DDR3 Dual-channel memory support. As for the cache, it supports L1 128K (per core) and L2 512K (per core).