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I found an awesome fan - is it really that awesome?

Last response: in Overclocking
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July 20, 2012 8:09:57 AM

Hey!

I was looking for the fans I'd need for my build. My radiator is with 16 fpi, so I figured i would need fans which was at around 1300-1500 rpm. I found one: http://www.alphacool.com/product_info.php/info/p665_Alp...

I just can't seem to understand how it can be over 80 CFM with less than 20 DBA? Are these specs really true? It's for low price of 6 dollars. Also, they look really sweet. Anyone know if they have that LED thing going on by default?

If they aren't too great, what (fairly) cheap silent fans can you reccomend for my Alphacool NexXxoS Pro II Radiator Rev. 2???

Thanks in advance!
July 20, 2012 9:58:26 AM

Oh sorry. Meant 47 CFM - is this a viable choice for a 120mm fan? I don't wanna sped to much money :/ 
a b K Overclocking
July 21, 2012 2:24:32 AM

Most fan specs are bogus and I wouldn't heavily rely to much on them. Especially for dBA and CFM. See if you can find some honest reviews on the fan for real world specs.
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July 21, 2012 10:49:31 AM

Thanks for the reply. That was excatly what I was thinking and I wasn't able to find any reviews whatsoever. After a bit more research I came across one of coolermaster's fans - COOLER MASTER R4-L2R-20AC-GP 120mm Blue LED Case Fan. http://www.newegg.com/Product/Product.aspx?Item=35-103-...

The reviews are really good one. Planning on using a fan controller to get them down to 1500 rpm - how will that affect the noise from them? Some say that they are a bid loud but used a fancontroller to get them near silent. Having them at approx 1500 rpm - 500 rpm lower than stock that is - will that make them maybe lower than 20 dba? Cooler master claims that they are 19 dBa at stock :) 
a b K Overclocking
July 21, 2012 2:40:20 PM

Slowing down any fan will make it quieter. Problem is your going to sacrifice airflow and static pressure when slowing down your fan. Depending on where your located some good brands to look into for fans are Noctua, and Thermalright. Not the only good brands, but two I have tested personally and can recommend.

Check out these fan test - http://www.youtube.com/watch?v=uuTm9XysZVA
http://www.youtube.com/watch?v=f_27oS9kO4I

Notice the dBA before the fan even starts. The ambient noise is between 20 and 30 dBA before the fan even starts spinning. =)
July 21, 2012 7:23:20 PM

Thanks for the links. Unfortunately, my budget is not for this. Where I live the prices are around the double of the US. I need 3 fans - so that'd be around 125 bucks. That's way over my budget. I'd want to spent about less than 40 bucks if possible for 3 fans.

So basically, what fans at that price range do you suggest? I'm looking the fan that pushes the most air under 25 dBA - at an affordable price - what do you suggest? :) 
!