"220V Cooling Fan" sent per minute, or the total volume of air inhaled in the same heat sink material, the air flow is a measure of the most important indicators of air-cooled radiator cooling capacity. The larger the fan. The larger air volume, more air volume per unit of time can take more heat. If the "220V Cooling Fan" wind than as a weapon of power play. So pressure is the weapon of sharpness. Under other conditions remain unchanged. The actual amount of wind to fan effect plays a decisive role. Aluminum fin "220V Cooling Fan" high wind pressure requirements. Copper fin air volume is required. The more dense fin. For higher pressure requirements. Otherwise, air will not flow smoothly between the fins.