"Cooling Fan Manufacturer" fan exhaust volume can be said that a more comprehensive index, so we can say that the amount of exhaust is the most direct factor to measure the performance of a fan. If a "Cooling Fan Manufacturer" can reach 5000 rev / min, but the fan if it is flat, then it will not form any airflow, so the amount of exhaust cooling fan, the fan's point of view is the decisive factor . Generally of good quality "Cooling Fan Manufacturer", even though we are very far away from its position, you can still feel romantic, this is a good heat dissipation performance.