Micro Cooling Fan fan size

"Micro Cooling Fan" Because of the large blades, the air flow naturally, large, per unit of time can take away more heat. Cooperation of large heat sink can be compared simply to do good cooling effect. But about 80 standard fan is, "Micro Cooling Fan" opposition pressure and noise compared to an outstanding, if greater pressure to occur (that is, to a high speed), then it will become very serious noise problem . But the use of silent type of fan, it would render the problem of the lack of pressure, if used on more dense fin heat sink, then the wind will not bottom fins. So we see the most use of 80 type "Micro Cooling Fan" radiator will cooperate more scarce large heat sink fins.