Micro Cooling Fan noise problem

"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, the wind pressure and noise prominent opposition analogy, if you want, then there is a greater pressure, the noise problem will become very severe. But the use of silent type "Micro Cooling Fan", then the problem will exhibit a 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 "Micro Cooling Fan" radiator will cooperate more scarce large heat sink fins.