comparison of 80 mm fan and 120 mm fan

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rookie1010

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Hi
I was wondering if some one could provide me with compairsons of air flow through 80 mm fans and 120 mms running at the same speed.

should i take the area80x80 =6400
120x120=14400

which would mean that 2 80 mm fans give less performance than a 120mm fan?
 
Yes, 1 120mm fan of the same rpm and fan style would blow more air than 2 80mm fans of the same rpms and fan style.
 
And you are also not taking into effect the center of the blades. With two 80 you have twice the amount of dead space.
So essentially a 120 is even more efficient than you think.
 
would you go for a case with 6 80 mm fans or one with 2 120 mm fans.

if i go for something which is very quiet. which would teh preferrable system be

would 6 80mm fans consume much more power than 2 120mm fans.
at the same time they are moving almost the same amount of air in and out
 
120s are quiter and move more air. if your case isnt built to support a 120mm fa its not hard to mod using a dremel
 
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