What is the best case fan setup? Are 2x120mm or 2x140mm intake fans give better airflow than the stock 200mm fan for positive pressure? Should the rear fan size generally match, I.E., dual 140mm intake fans and a 140mm rear exhaust fan? I'm not sure about roof fans because I'm not decided on case orientation and window panel placements if using a horizontal motherboard setup, like 2 side window panels and vented roof, or just go vertical like a tower case with a single side window.
I'm waiting deciding on a case to all the Nvidia GTX 980 TI non-reference cards when they are released but everything else is already picked out for a complete air cooled rig.