Air getting in from top vent holes

Fed_erico

Prominent
Jul 28, 2017
2
0
510
Hi everyone. I got 4 case fans + cpu cooler fan in my Corsair 100R case.
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Fan 1, 2 and 4 are 120mm running @ 8-900 rpm
Fan nr. 3 is a 120mm running @ 1200 rpm

Now, I've noticed air leaks into the case from the unused vent hole nr. 5
Is this good? Should I close it with some tape or maybe move fan nr. 1 to vent hole nr. 5? I was undecided whether to put a fan right above cpu heatsink or top middle...
 
you have a pretty good airflow setup

the difference made by covering up hole 5 will be minimal if any at all

moving fan 1 to hole 5 will actually actually be worse for the cpu fan, as it will be taking some of the air away from it (not by much though)

If your temps are good, then just leave everything as is

There have been numerous YT vids testing which fans make the biggest difference and it's the rear exhaust and front intakes that have the biggest impact.

After that, any extra fans will make a difference, but the impact on temps reduces quite a bit