How is a computer brain
Brain vs. Computer
all right you guys it's time to pick
some teams it's a good match between
your computer and the you know off
camera that technically we're not
supposed to compare human brains and
computers like it's not something that
you can technically do which is a little
disappointing considering how much time
we spent on that intro okay so we can we
can kind of compare the outputs of
brains and computers so let's at least
do that the world's largest
supercomputer is called Kay and it lives
in Japan and I mean if it was an America
we'd call it something much more epic
than that but they were like let's pick
a letter and that'll be it it computes
about four times faster than your brain
and has about ten times the storage
capacity the human brain can process the
equivalent of about 2.2 mega flops I
love that word mega flop it sounds like
what my cat does when she wants me to
rub her belly a mega flop is a million
operations per second so our brains are
processing about 2.2 quadrillion
operations per second which I mean when
you see the stupidity of some people
it's just shocking
by contrast the case of your computer
does about 8.2 billion mega flops which
is a lot more on the other hand the case
supercomputer takes about 10,000 watts
to run by contrast our brain takes about
20 watts to run and the KSR
supercomputer cost tens of millions of
dollars to create whereas the human
brain costs literally nothing to create
the annual operating cost the case
supercomputer is ten million dollars the
annual operating cost of your brain is
hot pockets and Quiznos and then you
look at it pound for pound ER cubic inch
for cubic inch and your brain is like
the size of Bossier
fists cell together and the K
supercomputer uses 864 cabinets that are
stretched out in a room the size of a
large airplane hangar but it's still
really difficult to compare brains and
computers because they work in
completely different ways a computer has
a program or a set of instructions that
tells it what to do in addition to a
memory that contains all the data and a
processor that goes and gets the
instruction and applies them to the data
one at a time in a sequence it's all
very orderly on the other hand a brain
doesn't have separate processes and
memory program each neuron in the brain
can take in thousands upon thousands of
inputs at a time and simultaneously
independently process them and spit out
the answers plus it modifies its own
functioning on the fly all this is
happening and it's hundred billion or so
neurons the K supercomputer doesn't get
anywhere close to being that cool so a
supercomputer may be more powerful than
a human brain but the human brain is
still totally free twins thank you for
watching this episode of scishow if you
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