There's a difference between the moving stator in a turbine and the fixed horizontal fins of a HSF. You might take exception with his statement but it is nonetheless true. The higher the fin count and the higher the fin density the lower the flow due to resistance to air flow. A moving stator acts as a compressor by forcing air through the fins due to shear caused by the motion of the stator and forward motion of the motor through the air. The fins in a heatsink don't move and there is no forward motion to help force the air through them. Instead you have a motionless layer of metal with X fin density comprised of fins of Y thickness with air being forced through it by a fan (Z) with a a rating of so many mm of H20 displacement. It's still based on fluid dynamics only the heatsink is the baffle behind the compressor rather than the compressor itself.
Phenom II 940 Black Edition quad core @ 3.5Ghz
2x1 gig OCZ PC26400 Platinum, 2x1gig GSkill PC26400
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If the automobile had followed the same development cycle as the computer, a Rolls-Royce would today cost $100, get a million miles per gallon, and explode once a year, killing everyone inside. --Robert X. Cringely, InfoWorld magazine