With 86 billion odd neurons in the human brain, even with all the self editing interconnections, a similar sized computer must be getting close I seem to remem

With 86 billion odd neurons in the human brain, even with all the self editing interconnections, a similar sized computer must be getting close I seem to remember if a computer was built using valves to the same complexity of a human brain it would fill the empire state building (excluding the power supply of course)