Describe why graphene might become a suitable material to replace silicon in chips?

Most engineers and scientists are of the opinion that reducing the size of silicon chips will become complex and expensive. Also, the speeds of silicon chips have stuck in the gigahertz range. Graphene is the strongest material known to man. It has ability to serve as a superconductor. Graphene is cheaper compared to silicon, ultra- fast; it is estimated to operate at terahertz frequencies.