The HDD Rack with it’s unconventional airflow, where air flows from bottom to top to cool the hard drives.
The 120mm fan that’s in charge of pushing air via the side vents of the case, with an elaborate fan guard to prevent wires from being caught in it.
The ESA Circuit board. It comes equipped with fan control of up to 5 fans up to 0.5a, 3x CCFL or other device which you can switch on or off up to 0.8a and 4x thermal sensor connectors. The fan speeds and CCFL lights power can be adjusted and switched on/off via Nvidia’s Software ESA Control panel.
3x 8800GTX installed, with more than ample space for even longer cards.