With out getting into a big debate about positive vs. negative pressure inside a computer case;
which way should I put the side fan (behind the motherboard tray) on the Antec Three Hundred Two case I'm going to get.
This case will have ALL fans possible:
2 x 120mm fan in front, intake, over the hard drives.
1 x 120mm Fan on left side, intake, onto the graphics card.
1 x 140mm fan on top, exhaust out the top.
2 x 120mm fans, in push/pull, thru an Antec H20 CPU cooler radiator, exhaust out the back.
The right side fan is on the back side of the motherboard tray, for cooling the back of the motherboard area "under" the CPU.
If this fan blows in, it (could) blown dust all over the back of the motherboard.
But if it blows out, will it really cool anything?
But if it blows out, it would (theoritically) create a "static" or slightly negative pressure into the case (3x120mm intake - 2x120mm exhaust - 1x140mm exhaust).
I think I'l go with exhaust/out, and see if it really moves any air.