[AMD's Overview of CPU design][1]


[Intel's version][2]


  [1]: http://www.youtube.com/watch?v=-GQmtITMdas
  [2]: http://www.tomshardware.com/picturestory/514-intel-cpu-processor-core-i7.html

Neither of these provide much detail, but interesting none the less. Don't accept this as an answer. Others have considered your question in detail and have provided more effort in attempting to answer in detail.