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Forum question
Started by leeb2013 | | 4 answers
hi, I've decided to delve into water cooling and have chosen the Kraken X41.
The FX V2 140 performance fan which it comes with has the following specs;
800-2000 rpm
20-37 dBa
42-106CFM
0.36-2mm H2O
I also have two Nanoxia DS 140mm PWM fans with the following specs;
700-1400rpm
16.2 dBa max
76.5 CFM max
1.18 mmH2O max
purely going off the specs, it would seem I am better going with the Nanoxia fan as even at Max rpm it is quieter, has more CFM and static pressure than the FX V2 at it's lowest RPM. Also, as the Kraken radiator has fairly low FPI, high static pressure is not so important.
What are your thoughts on this?
How would using 2 Nanoxia fans (push/pull) affect performance? ie. how much does noise/CFM/pressure increase for the same rpm, using push/pull?
Thanks
The FX V2 140 performance fan which it comes with has the following specs;
800-2000 rpm
20-37 dBa
42-106CFM
0.36-2mm H2O
I also have two Nanoxia DS 140mm PWM fans with the following specs;
700-1400rpm
16.2 dBa max
76.5 CFM max
1.18 mmH2O max
purely going off the specs, it would seem I am better going with the Nanoxia fan as even at Max rpm it is quieter, has more CFM and static pressure than the FX V2 at it's lowest RPM. Also, as the Kraken radiator has fairly low FPI, high static pressure is not so important.
What are your thoughts on this?
How would using 2 Nanoxia fans (push/pull) affect performance? ie. how much does noise/CFM/pressure increase for the same rpm, using push/pull?
Thanks
leeb2013
October 15, 2014 5:16:29 PM
Deuce65
October 15, 2014 4:23:46 PM
Unfortunately it's hard to answer simply. Here's the thing. A particular fan pushes a certain amount of air. With no resistance whatsoever, it pushes what the box usually calls max CFM. Of course in the real world, there is resistance. Thats where the second number comes in, that number is referring to how much resistance it takes to completely stop the fan from pushing anything. In the real world of course, you won't be using either of those numbers, but something in the middle (and it is not at all linear so we can't just estimate it).
What does this have to do with push\pull? Well, when you put fans in push\pull it won't increase the max airflow, but it will alleviate some of the resistance of the rad. But again, since we don't know how well the fan performs to begin with, we can't say how useful it will be.
Anyways, I realize this doesn't really answer your question but hopefully it helps a little. Best bet is to hook them both up and just try it and see which works better.
What does this have to do with push\pull? Well, when you put fans in push\pull it won't increase the max airflow, but it will alleviate some of the resistance of the rad. But again, since we don't know how well the fan performs to begin with, we can't say how useful it will be.
Anyways, I realize this doesn't really answer your question but hopefully it helps a little. Best bet is to hook them both up and just try it and see which works better.
leeb2013
October 15, 2014 3:46:37 PM
Deuce65
October 15, 2014 3:39:54 PM
Generally speaking, with few exceptions, the specs printed on the label for fans are completely worthless and tell you absolutely nothing useful about a fan. Throw a rad into the mix and there is no point in even looking at them.
Since you have both these fans, put them on and try it is really the only way to tell, unless you can find a reviewer that has already done it.
Since you have both these fans, put them on and try it is really the only way to tell, unless you can find a reviewer that has already done it.
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