According to Bostrom, a computer program that faithfully emulates a human brain, or that otherwise runs algorithms that are equally powerful as the human brain's algorithms, could still become a "speed superintelligence" if it can think many orders of magnitude faster than a human, due to being made of silicon rather than flesh, or due to optimization focusing on increasing the speed of the AGI. Biological neurons operate at about 200 Hz, whereas a modern microprocessor operates at a speed of about 2,000,000,000 Hz. Human axons carry action potentials at around 120 m/s, whereas computer signals travel near the speed of light.