Quantum computers are theoretically faster than classical computers primarily due to their ability to leverage quantum bits (qubits), which can exist in multiple states simultaneously, enabling parallel processing. This characteristic allows quantum computers to perform complex calculations more efficiently than traditional binary systems. However, as of now, functional quantum computers are limited, with existing models like D-Wave's systems being algorithm-restricted and lacking proven quantum processing capabilities. The potential for quantum computing lies in its unique processing power, but practical applications and fully operational quantum systems are still in development.