Counter rotating fans.

JonJ678

JonJ678

JonJ678

Soldato
Joined
22 Dec 2008
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England
I thought this deserved a mention, as many people may not know they exist.

Here is a data sheet for a certain 120mm san ace fan.

The interesting numbers are 300cfm at 480Pa @ 13V, there's graphs to determine what its like at 12V dead.

I think the possible application to domestic watercooling is nil. However there may be less savage versions out there which I haven't found yet, and I do wonder about making a very compact radbox to keep a long, long way away from your computer. Say in the loft
 
I'll get back to you on that one

Skinnee labs do it better than I could

It amounts to using a manometer, shockingly. Do you have comparing this datasheet with your fans in mind? I don't think you'll like the conclusion

According to Diggsy, Noctua NF-P12's have only 1.68mm H20. I believe he'll have taken the number from noctua, but do not know. That's 16.5 Pascals.

So noctua P12 at 16.5 is a sort of fair comparison.
 
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well surprised e the yate loons wern't up there at the top, so this shows that the scythhe kaze are the best fans for pressure yea?
 
it mainly shows that 38mm kicks the hell out of 25mm, which is not a surprise, the part i was looking for was how he tested them :)
 
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