I've been assembling a custom PC, and was wondering if it's OK to have an exhaust fan directly above the intake fan for my heatsink.
This is how my system is laid out
2 Answers
It will be okay to put but it is of no use to connect the exhaust fan on an intake fan, both will be fighting for the same air(i.e. neither hot nor cool) as both are in the same direction. instead of that put both the intake fan at one place.
That is remove your 1 intake fan and connect it above the CPU intake fan so that the external intake fan bring the cool and fresh air inside the cabinet and your CPU intake fan will take that air directly not any other hot air.
And your other fans (exhaust fans) will do there job of removing hot air from the cabinet.
Direction of the Air matters a lot see this design architecture of this cabinet then you will get a clear picture.
visit this for more inforEdit
your connection are okay but my advice is to Change the marked exhaust fan with intake fan that will be good for giving cool air to your CPU.
I understand what you are saying. The top fan is fighting the CPU fan for air as the top fan is sucking available air out. This is my own experience. When I had the top blowing in temps where good and fans quiet. I reversed it and made the top exhaust as that seemed a great way to get top hot air out. No hot air comes out the top but the back is hot. It is loud up top as fan struggles to blow any air out. Dust is better but temps and noise where better with it blowing in from the top. I may move it over to the other top slot (one fan in mine) and see. If not it is back to blowing in right on the CPU fan as this seemed much better.
