Better cases have frt. & back mounting areas for fans. If not, you can rig them if you're capable. If you want you can add(cut hole) a side and/or top fan(s) for better cooling, again if capable but this isn't a big deal. A simple buss slot fan is available for mounting in the slot area next to a video card or not, but usually these exhaust. Any good fan should have embossed arrow or label to show airflow direction,, thus mount as required.
good luck -----Willy
I have a general question about where to put case fans. I know there are many, many different types of cases, but generally what is the best setup for intake and exhaust fans in an ATX case? And if you have two spots on the case door for fans, is it okay to put intake and exhaust fans next to each other on the side or should they both be going the same way?
Any input is much appreciated, thanks.