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these fans good for rad? - Page 2

post #11 of 24
Quote:
Originally Posted by lowfiwhiteguy View Post
Noctua NF-P12's, best bloody 120mm fan I've ever had.
but they have no static pressure for a radiator...


Quote:
Originally Posted by smokebaca View Post
ek coolstream rad xt 360
everything i have read says it does great with low cfm
you should be fine with either push or pull...the rad is only 47mm thick, it's not going to make much of a difference..(unless .5C justifies the extra $50)
Edited by longroadtrip - 10/18/11 at 9:38pm
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post #12 of 24
I have to recommend the Akasa Viper fans or the Apaches. Hook them up with an Akasa Flexa(5 fan PWM splitter with its own power supply) and you have a silent rig when idling with plenty of room for cooling capacity. And some great static pressure. PWM FTW
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post #13 of 24
I always forget about the Akasa fans...they are a good performer too...
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post #14 of 24
Quote:
Originally Posted by smokebaca View Post
will these fans have enough static pressure to push air through a rad or or the blades too thin?
The 140mm variant does well on a rad, which would indicate that the 120 is probably decent too (take care with these kinds of assumptions though).


Quote:
Originally Posted by Furball Zen View Post
Yea, but honestly, if you dont care about a little noise, Yate Loon high speeds are only $3.99 at xoxide.com. Even the medium speed ones would be just about as good.
This too, YLs are really good fans; rugged, decent performers and cheap.

Quote:
Originally Posted by smokebaca View Post
lol ok should've never asked the question because i knew someone would say get the ap-15's
Always!

Quote:
Originally Posted by somebadlemonade View Post
haha, yea this board does love some ap-15's i've been looking around for good alternatives but it looks like there aren't really any
The GTs are some of the best, if not the best, 120mm fans for noise / performance. No other fan test I have seen even comes close to them on a radiator.


Quote:
Originally Posted by smokebaca View Post
i know and it sucks but hey got to give credit where credit is due they are awesome fans. One last question before I order these things.

Should i do a push pull system (my guess is yes or duh.. as an answer) or would i be fine with just a pull or push configuration
Well duuuh!

Push / pull will give you anywhere up to a ~30% advantage with heat dissipation at the cost of a little extra noise and space requirements. Depends on you as to if it is worth it. Remember you can always add extra fans later.

Here is a quick test on push vs pull vs push / pull and some shroud testing too.

Quote:
Originally Posted by longroadtrip View Post
actually...here is where it can get complicated...not all rads have a dramatic increase in performance with p/p...some rads perform better with low speed fans vs. high speed..what rads are you running?
Actually all rads do better with increase air flow from push / pull, just some really benefit from increased air flow whereas others only get a little more performance. Have a look at the results of Skinnee's testing, the GTX simple takes off with increased air flow, but all the others show some improvement too:



The main thing is that none of them get worse with extra air flow.

Quote:
Originally Posted by lowfiwhiteguy View Post
Noctua NF-P12's, best bloody 120mm fan I've ever had.
Shame they are one of the worst bloody 120mm fans for WC rads. Seriously, low CFM and resonance issues make this fan worse than the NF-S12B. Shame really, it had some potential.

For a good 120mm fan testing resource check out Martin's round 6 test. The full results chart is shown below:


Edited by GingerJohn - 10/18/11 at 10:13pm
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post #15 of 24
Quote:
Originally Posted by GingerJohn View Post
Actually all rads do better with increase air flow from push / pull, just some really benefit from increased air flow whereas others only get a little more performance. Have a look at the results of Skinnee's testing, the GTX simple takes off with increased air flow, but all the others show some improvement too:



The main thing is that none of them get worse with extra air flow.
[/img]
This is exactly what I was saying...not all rads have a dramatic increase in performance with P/P...it doesn't always justify it.
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post #16 of 24
Funny how people keep saying that stacking rads doesnt help.... that right there proves it does.
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post #17 of 24
Quote:
Originally Posted by Furball Zen View Post
Funny how people keep saying that stacking rads doesnt help.... that right there proves it does.
At higher fans speeds it gives a very slight improvement. At lower fan speeds it is actually worse.

Either way if you took the two rads and separated them the performance would double, rather than adding about 5-7% at high fan speeds.

So yes, at high fan speeds it works. Just not very well.
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post #18 of 24
Yea, im just saying blanket.
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post #19 of 24
Thread Starter 
so i ended up buying the GT AP 15 and just got them in.
However are they not a variable fan speed?
if not it is cool because they are quiet and push a lot of air but from now on i wont be buying them if they cannot be controlled.
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post #20 of 24
Quote:
Originally Posted by smokebaca View Post
so i ended up buying the GT AP 15 and just got them in.
However are they not a variable fan speed?
if not it is cool because they are quiet and push a lot of air but from now on i wont be buying them if they cannot be controlled.
Do you have them hooked up to a fan controller?
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