More case fans, or big case fans?
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Solved by scaryjam823,
More smaller case fans, or a few big case fans?
http://www.tomshardware.com/forum/322958-31-smaller-fans-cooling
"Area a circle A = Pi times r squared
A 200 mm fan has 0.0314 square meters area [ believe me I did the math ]
a 140 mm fan has 0.015 square meters , but there are two of them so 0.030
The single 200mm fan has more area [ just] than two smaller fans , and even more again when you consider that all three fans have a similar size hub sizes and you lose that area twice with the smaller fans .
Also if a 200 mm fan is spinning at the same speed as a 140 mm fan the tips of the blades are moving much faster . This is part of the reason why a larger fan doesnt have to spin so fast to move more air . A bonus of that is that it then makes less noise
One big fan , not two small ones"
"Hmm guna do the math and write it out here to see the outcome
Pi (3.142) x Radius ((70mm)140mm fan) Squared
Effectively 70x70x3.142
= 15395.8
Now x2 (because there would be x2 140mm fans)
= 30791.6
Ok so now the 200mm fan:
Pi (3.142) x Radius ((100mm)200mm fan) Squared
Effectively 100x100x3.142
= 31420
"
To add, a larger fan will spin slower and be quieter than smaller fans. I have the largest fan sizes I can have in my case. 4x200mm, 2x 140mm, 2x 120mm, 1x80mm, 1x120mm. It's pretty quite and stays cool, it was even quite when I just had the 200mm fans installed.
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