Low Noise, high CFM fans

Looking for a fan to replace the one currently in my power supply (Seasonic M2II evo 850w) and was going to use a Noctua SB12-redux, but upon looking deeper into to it I found it has about half of the CFM of the fan currently in my power supply. So my question is can anyone point me to high CFM fans that also quiet, or if there won't be an issue replacing the current one (CFM of 98) with the Noctua one (CFM of 59).

I believe the only way to really achieve that is going to be with larger fans since they can move at lower RPMs to move the same amount of air

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I understand that, but as this is meant to replace the fan in my power supply I'm stuck with 120mm fans.

Well, just head to newegg and start searching by CFM and DB, this one is 69cfm, 19db

http://www.newegg.com/Product/Product.aspx?Item=N82E16835103060

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Cheers

Or this one is 90cfm, 20db
http://www.newegg.com/Product/Product.aspx?Item=9SIA85V36V6232

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107CFM

probably going to hear it though @3000 RPM
https://shop.ekwb.com/ek-furious-vardar-ff5-120-3000rpm
Furious Vardar FF5

I have 4 of the F1's (lowest speed) they are inaudible when I turn them down with fan controller, hard drives are louder than these fans (F1 anyway)

They have different versions with different speeds

I agree, but then he's modding his PSU fan right? so unless he's modding the box to be bigger he'll have a hard time stuffing a 38mm into the area for 25mm fan. Unless he's placing it on top. You can get away with a delta since I think most seasonic have re-badged Deltas in them.

Have a look at the Akasa Viper fans

http://www.akasa.com.tw/index.php?lang=en

Guys, I've appriached all the replies but could I get an answer on this, I have the fan I mentioned in the OP (Noctua NF-SB12) with it's CFM of 59 would that be enough for my power supply?

should be

You can still get Nidec Gentle Typhoons, they are not PWM however. I personally uses 4 of them in my machine and they are really good!