I am Using a fractal design define r4 case.
And i am scare that the heat will go up , because the case is like covered by the sponge in every airhole . And if i add fans i am scared that it will be noisy .
Which position should i install the fan for intake and exhaust?
and which position should i install the fan to have stable quietness and coolness??
And Which 140mm fan is the best quiet and cooling airflow??
please give me some suggestion..
You need to tell us about your system. The case is designed to provide optimal cooling for almost any system and unless you are overclocking a lot you shouldn't need to add any extra fans at all. I have the FD Arc Midi R-2 and the existing fans work just fine at the medium level even when I'm gaming (which isn't all that much as I mainly use the PC for photo editing).