mmmmmmmm... 2 x 230mm top exhaust fans, 1 230mm intake, all aluminum, and a unique 120mm fan powered card-slot hot-air removal system, with the standard bottom mounted PSU intake, 120mm rear exhaust, additional bottom 120mm intake, and shock absorbing HDD cage...... ATCS 840 - no question. Redundancy is good with cases :biggrin: