It is generally accepted that the locations and molecular structure of synapses are a critical determinant of CNS function. And a typical neuron will have and m

It is generally accepted that the locations and molecular structure of synapses are a critical determinant of CNS function. And a typical neuron will have and make hundreds to several thousands synapses. So the more appropriate unit to compare to CPUs and GPUs is synapse number, not neuron number. Here is an open version of my Annual Review of Neuroscience article with Karl Herrup on the control of neuron number. Old paper but it is one of the first publications to give an accurate estimate of neuron numbers in the human brain right: https://www.nervenet.org/papers/NUMBER_REV_1988.html https://www.nervenet.org/papers/NUMBER_REV_1988.html