Case fans

[xBlueXFoxx]

Can it fly?

however...depending on the size and the flow of your fans, I can really imagine that having 6 fans is not optimal (Energy/efficiency/noise).

Well case fans should always be setup to make a vacuum effect in your case, ex: Front panel case be outer flow and back fans be intake. Side panel or case door fans should always be an intake setup. (aka blows air into your case.) As for energy efficient, well really it doesn't matter too much, as long as you have enough to supply it.