Micro Cooling Fan vents is enough?

"Micro Cooling Fan" around vents is enough? Is there an air duct on the chassis? There is no set VGA cooling zone on the side? Whether internal duct reasonable ...... these people in the choice of the chassis performance, while another often overlooked aspect is the case whether to install the chassis fan, "Micro Cooling Fan" can effectively control the temperature of the chassis, making the other radiators work more efficiently. Today's computer hardware in performance and power consumption have a leap of improvement, while the chassis fan in this small space, but decisive, with "Micro Cooling Fan" reasonably fit can control airflow inside the chassis smooth, and effectively control the chassis temperature, according to the authority of the media trial test standard chassis fan can effectively reduce the temperature inside the chassis allow 12-14 degrees.