Not only did the Cray weigh far more than the Apollo computer, and not only did the Cray supercomputer use far more power, but the Apollo computers had to be de

Not only did the Cray weigh far more than the Apollo computer, and not only did the Cray supercomputer use far more power, but the Apollo computers had to be designed to be highly resistant to interference from radiation. Radiation hardened electronics are fascinating to me. To this day, electronics that function in outer space are much slower than datacenter or consumer-oriented components.