Case fan mount locations

[ron2456]

I have a Coolermaster Spec 01 Case. I have Installed:

1. Intake: 2x Cooler Master SickleFlow Red Led(90cfm, 2000rpm).

2. Exhaust: Back 1x CoolerMaster Masterfan Lite MF120L Red Led (32Cfm, 1200rpm).

I also have provision for two more in the top but I am leaving them open for now to work as intake for cpu cooler and as a heat vent.

So what I want to ask is that if a "Low Rpm" fan be okay as an exhaust? Or do i need to use a high rpm high airflow fan as exhaust.

 

[CountMike]

Rpm doesn't matter much different fans can have different characteristics (flow, static pressure) at different RPM. Those are only characteristics to look for. Your main goal is to have as much airflow as possible over largest area possible.
Case fans with highest airflow at lowest RPM are usually quietest ones.