The brain's 5-million core, 9 Hz computer
Hmm, so, if their metaphor really held, the brain's computation could be simulated with a 45MHz CPU?  Well, let's fix this up a bit...<p>(1) Give it 1000 clock cycles of cpu work to simulate a single neuro-tick.<p>(2) The clock is actually variable 5-500Hz (from the article).<p>So, 500Hz*5m = 2.5GHz, at 1000 cycles required, so 2500 Ghz of CPU power.  An amazon large-instance cluster box is 8 cores of xeon at 2.93 Ghz, about 110 cluster instances to simulate a brain?