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Old April 14, 2011, 10:07 PM
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Default 200MM fans inquiry

Hey guys,
i m wondering is there 200MM that can runs at about 2000RPM or even 1500?
The two coolermaster 200MM fans i have is running so slow.. at about 700RPM only
I dont feel enough airflow.. lol

Please help..
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Old April 14, 2011, 10:44 PM
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most of the consumer ones are like that, take tt's ones(200-230mm) they run under or around 1k rpms.
having blades that big warrant little spinning to generate considerable air movement.
pressure,well,not quite there :)

Thermaltakeusa**DC Fan**200mm Fans**200mm Blue LED Silent Fan : 200mm Blue LED Silent Fan AF0046

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and yeah im a sucker for those huge fans. i build two sideless rigs with them lol.
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Old April 15, 2011, 01:32 AM
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If these are the ones you ( laplapmax) are talking about MegaFlow 200 Blue LED Silent Fan - Cooler Master - Leading Provider of Computer Case | Cooler | Power Supply then I don't see why there is a problem; I had one of these on my old air-cooled rig, it seemed to work very well-doesn't take a lot of speed to produce a lot of CFM.
As for static pressure; is not the higher the number the better (e.g. Thermaltake AF0046 @ 0.175 mmH2O vs Cooler Master @ 0.595 mm H2O ), so the Cooler Master would have the higher static pressure?
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Old April 15, 2011, 02:35 AM
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or this maybe?

Newegg.ca - Rexus Rexflo250mm 250mm Case Fan

any bigger and youll probably be looking at industrial or radiator fans
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Old April 15, 2011, 05:41 AM
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Unfortunately it won't feel like a lot of airflow becuse it is over a larger area.
If you take a 10CFM 4000RPM 40mm Fan and put it up against a 120mm that does 20CFM at 1300RPM it will feel like the 40mm is pushing more air.

Same is true for these, the Big Boy 200mm pushes out a monsterous 100+CFM. There is massive airflow in that fan, so don't panic that you don't 'feel' like there is a lot of air movement...there is.

AS for static pressure, its on a 200mm+ fan, static pressure is a non issue unless you are mounting it to a RAd or HSF, which is highly unlikely.


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