I will just show the statistics of last attempt to mimic the brain process.
Last year Japan launched there fastest supercomputer:
K computer OR SPARC64 VIIIfx 2.0GHz
- Manufacturer: Fujitsu
- Cores: 705,024
- Linpack Performance (Rmax) 10,510 TFlop/s
- Theoretical Peak (Rpeak) 11,280.4 TFlop/s
- Power: 12,659.89 kW
- Memory: 1,410,048 GB
- Processor: SPARC64 VIIIfx 8C 2GHz
- Operating System: Linux
It's currently world's 4th fastest supercomputer.
Source: Top 500 Supercoputers
Image Source: http://wondergressive.com/wp-content/uploads/2014/01/WG-k-computer.jpg
An 83,000-Processor Supercomputer Can Only Match 1% of Your Brain
...The most accurate simulation of the human brain to date has been
carried out in a Japanese supercomputer, with a single second’s worth
of activity from just one per cent of the complex organ taking one of
the world’s most powerful supercomputers 40 minutes to calculate.
Researchers used the K computer in Japan, currently the fourth most
powerful in the world, to simulate human brain activity. The computer
has 705,024 processor cores and 1.4 million GB of RAM, but still took
40 minutes to crunch the data for just one second of brain activity...
Do we have brain to spare?
by David A. Drachman, MD
Within the liter and a half of human brain, stereologic studies
estimate that there are approximately 20 billion neocortical neurons,
with an average of 7,000 synaptic connections each.1 The cerebral
cortex has about 0.15 quadrillion synapses—or about a trillion
synapses per cubic centimeter of cortex. The white matter of the brain
contains approximately 150,000 to 180,000 km of myelinated nerve
fibers at age 20, connecting all these neuronal elements. Despite the
monumental number of components in the brain, Szentagothai estimated
that each neuron is able to contact any other neuron with no more than
six interneuronal connections—“six degrees of separation.”
Image Source: http://www.nature.com/polopoly_fs/7.2933.1329907514!/image/far-to-go.jpg_gen/derivatives/fullsize/far-to-go.jpg
Why Brain beats Supercomputer?
Why is it so hard for computers to reproduce what your grey matter
does as a matter of course? Volume. The human brain consists of about
200 billion nerve cells (neurons) that are linked together by
trillions of connections called synapses. As the tiny electrical
impulses shoot across each neuron, they have to travel through these
synapses, each of which contains about 1000 different switches that
route that electrical impulse. In total, one human brain could contain
hundreds of trillions of these neural pathways. It's like a Choose
Your Own Adventure book that stretches from here to Jupiter.