Well talking about exhaust and intake, the way i have it setup it acts as both. For the cpu i have the overclockers kit from xoxide.com where u have the tube going directly to heatsink which i took fan off heatsink. the fans pull from all open parts of case front back and exhausts out side and up. Im really suprised with results cause i lost about 15-20*F at full load. was at 104*F now im at about 86*F while folding.

o and to answer on of your questions about exhaust, the 4 outer ones are exhausting out and middle fan is connected directly to heatsink