Why are there more CPUs than expected in /proc/cpuinfo?

Solution Verified - Updated -

Issue

  • System has 2 quad-core processors installed, but 16 cores are appearing in /proc/cpuinfo. Where are the other 8 coming from?

Environment

  • Red Hat Enterprise Linux 5.5
  • Intel(R) Xeon(R) CPU X7350 @ 2.93GHz processor

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