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Re:Human brain has more switches than all computers on Earth by AngryParsley on Friday November 19, 2010 @09:27PM (#1923643)
All parallel tasks can be efficiently serialized on a fast CPU but not all serial tasks can be efficiently parallelized on many slow CPUs.

From http://lesswrong.com/lw/k5/cached_thoughts/ :

Can you imagine having to program using 100Hz CPUs, no matter how many of them you had? You'd also need a hundred billion processors just to get anything done in realtime.

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