Originally Posted by SaintsEnd
So you have a very tiny case; crammed in there are alot of parts, there is no filter, just the fan to the case, is it better for a high static pressure fan or a high air flow fan. I would guess high airflow, since the air is only pulling in air. however I am not entirely sure.
ideally, if you only have 1 fan in the case, you want it to be a filtered intake fan. as ciarlatano has already mentioned, it would help alot if you can describe the build alittle more so we can help you to achieve your goal. generally speaking, PSU has an exhaust fan on it so if you use the only fan mount you have for intake you will still have the PSU as exhaust fan. if you have a video card in the build, the GPU fan is also generally regarded as an exhaust port as well. so if you have a chassis fan mount, it would be best to put a high static pressure fan on it so you can use it as a filtered intake. unless we know more about what you are trying to build, it's really the only educated guess we can help you with.