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?
 

GeckoEcho421

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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.
 

Joeisalsocool

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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.
 

rookie1010

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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
 

jblaze725

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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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