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Noctua NF-A14 Push-Pull on RAD

post #1 of 9
Thread Starter 



I just got my A14's yesterday. They are quieter than my coolermaster nepton 140XL jetflo 140's that came with it, they were louder.

But, i'm running a push pull on the RAD. as you can see in my avatar 1 fan is on top, so I can hear this high pitched humming that kinda annoying, but I want the cooling power of 1500 RPM. Do I need to put the low noise adapter on the top fan or bottom one or both to lower the sound?

Thats the only negative for these, the high pitched whining horizontally mounted on a rad, push-pull.

One positive thing is that they actually have nice static pressure that they dont lie about, the coolermaster top fan blew to the sides, while the with the A14's the air blows straight up.

These fans are so good that I want to put more in my case, yet the whining is killing me, ugh, I want LED fans tho, any 140mm fan with LED's (Blue) comparable to the noctuas? they will go on the sides and front intakes.
post #2 of 9
Phanteks SP has a blue LED version but it's not PWM like XP

Aerocool is supposed to have a Dead Silence fan but I don't think it's going to be suitable for a rad
post #3 of 9

Are you sure the whining is from the fans? It could be from an interaction between the fans and the case (you are interposing the case between the rad and the top fan).

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post #4 of 9
Quote:
Originally Posted by ehume View Post

Are you sure the whining is from the fans? It could be from an interaction between the fans and the case (you are interposing the case between the rad and the top fan).

I think your correct, I have all Noctua fans in my case (6) and my 2 front fans on high make a whining sound but if
I remove my front panel so the grill is not in front of the fans the whining is gone.
so it's my case grill design. I am running the same case as the OP Corsair C70 and the front and top grill are the same, I don't have the noise on the top as my 140mm fans don't run at a high rpm.
I just keep my front fans at half speed as I don't need them at full speed.


Edited by jlhawn - 3/25/14 at 9:25pm
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post #5 of 9
You may not need push/pull, what are your temperatures like just now?

Have you tried to reduce the speed of the fans?

The noise could be coming from the fan being in contact with metal, I have a similar problem, using rubber mounts or gaskets may get around the problem. Another problem is that it could be the restriction form having to go through a radiator or a combination of the two.
post #6 of 9
I have NF-A14 PWM and if you turn the speed up past 1100RPM or so in pull on solid metal mesh it makes wind noise (so it isn't from the fan) , it doesn't do so in push in the frame of the case behind a screen type filter
post #7 of 9
Quote:
Originally Posted by AlphaC View Post

I have NF-A14 PWM and if you turn the speed up past 1100RPM or so in pull on solid metal mesh it makes wind noise (so it isn't from the fan) , it doesn't do so in push in the frame of the case behind a screen type filter

Yeah, know what you mean about the solid mesh thing, I find that metal mesh can create a lot of noise, its worse when the fan is in taking air (on GTs anyway). SPCR were talking about this problem they way to get around it is to have the fan running with out mesh in the front.
post #8 of 9
Thread Starter 
my idle temps are usually around ambient air temp, gaming like skyrim and crysis 2 the cpu or socket doesnt go above 42C, this morning when I fired up the comp, it the CPU showed 9C.

Should I use the rubber nails they came with? or slow down one of the fans?

The coolermasters that came with the RAD also have their own toolless screws. I do think I need a pull fan on top, cuz when the games are going its blowing out hot air, doing a good job, the CM 140's were 700rpm faster but alot louder. These are at 1500RPM
post #9 of 9

Temps going up are usually due to airflow blockage. Get out your trusty DataVac 500 (watch for sales if you don't have one yet) and blow the dust out -- back to front. Put tongue depressors/skewers/fireplace matches through the blades of your fans to keep them from spinning while you clean the thing out. You can also use a vacuum, but use it to suck dust from the outside, NOT blow (vacs are dirty).

 

AS for your setup, you will need to supply a pic or two.

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