The Computational Supremacy of the Human Brain: A Comprehensive Analysis of Information Processing Efficiency Across Biological and Artificial Substrates

This paper presents a rigorous comparative analysis of information processing efficiency across biological neural networks and contemporary artificial computational paradigms. The human brain achieves approximately 10¹⁶ operations per second while consuming merely 20 watts—equivalent to two 10-watt LED light bulbs—yielding an efficiency of ~10⁻¹⁵ joules per operation. This represents a six-order-of-magnitude advantage over digital processors and establishes the brain as the most sophisticated known computational substrate.