The largest scale FPGA we "have" is probably UltraScale VU440, which you can't really buy yet. It has 4.4M logic units. Again, that's 6 decimal orders of magnit

The largest scale FPGA we "have" is probably UltraScale VU440, which you can't really buy yet. It has 4.4M logic units. Again, that's 6 decimal orders of magnitude on the number of neurons alone. Not sure about connectivity architecture. That's maybe enough to simulate the cockroach brain. http://wikipedia.org/wiki/List_of_animals_by_number_of_neurons http://wikipedia.org/wiki/List_of_animals_by_number_of_neuro... Don't get me wrong, I really really really want this to happen. I just doubt it will happen in the next 3-5 years. There are other challenges, main one being creating the right connections. It took a long time for the evolution to create and perfect our brain. And it was a highly parallel process too.