There is a 120mm ball-bearing intake fan to input cold air into the chassis, and it only runs at 1200RPM, it can move alot of air volume, and silent too.
There is one 120mm exhaust fan at the rear of the chassis, it runs at 1200RPM, silent and still can move a good volume of air.
The PCI bracket with vent holes adds extra ventilation possibilities for improved airflow for optional graphics card coolers.
