NoC architecture performs better comparing to bus based when the number of processors is small. On the other hand bus based performs better than NoC when number of the processors is large. This leads to new architecture which is hybrid bus based architecture where each node is packet switched in a mesh network of NoC architecture that contains bus based system with small number of processors. Few results showed that this hybrid architecture performs optimally better than either purely NoC based or purely bus based architecture. Hybrid architecture contains a processor connected to the bus, the bus in turn connected to the router.