4 case fan no front fan, which one intakes?

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Jul 15, 2015
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I have 2 fans at the top as outtake, 1 bottom intake, 1 rear outake, all 120mm, I need to leave the case open getting 48c average in cpu and 38c average on motherboard while gaming. If it's on idle I'll get 30-33c cpu on hot days and 34c motherboard on hot days (I have a standard cpu fan nothing fancy). my gpu was on idle around 60c and 68-70c on gaming (7950 amd for 3 years, dying now, getting 980 Ti)
I have two new fans from corsair coming up ----120mm Corsair Air Series SP120 High Performance Edition, High Pressure, 2350rpm, 62.74CFM, 35dB.
I don't mind leaving the case open. I Would like to change how the fans currently set up. Because I feel there is not enought intake.
I was thinking 1 bottom intake corsair fan, 1 rear intake corsair, 2 top outtake fans. The old fans I have are maximum 1200rpm (coolmasters). I think cfm is around 30.
What would you do? Cheers
 
Solution
Exhausting warm air is more important than intaking fresh air because fresh air will enter as the warm air is exhausted. But adding the intake fans WILL improve air flow a bit. Any way you position the fans is fine as long as you try to keep intake at front, bottom, side and exhaust at rear, top. Warm air naturally rises.
Exhausting warm air is more important than intaking fresh air because fresh air will enter as the warm air is exhausted. But adding the intake fans WILL improve air flow a bit. Any way you position the fans is fine as long as you try to keep intake at front, bottom, side and exhaust at rear, top. Warm air naturally rises.
 
Solution

Ok, I'll put a intake fan at the rear, I don't have any place to put it at the front, and keep the 2 at the top as outtake, I wonder if the rear fan would affect the cpu fan from the wind force
 
hmm Ok I'll have to do some experiment, thx