Thermaltake TMG A2 CPU Cooler review
As a gas turbine technician (jet engine guy) I must take exception to the following statement:
Close fin spacing creates high airflow impedance, reducing low-airflow effectiveness
Knowing what I know about aero/fluid dynamics, I know that the closer your blades are together (and the more surface area they occupy) in a fan, the greater the volumetric efficiency of the device. Ever seen a turbo-fan or turbo-jet engine with 4 or 5 fan blades? If fan blades spaced far apart is somehow a good idea, then our jet engine designers have been getting it all wrong for a great many years. Closely spaced fan blades are a plus, not a minus. If you 'd like to test that theory, cut off half the blades and measure the resulting airflow change.