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PostPosted: Mon Mar 01, 2010 5:56 pm 
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Posts: 3395
Location: US
bestwestern wrote:
I think it's strange that Noctua is including their old 120 mm fan NF-P12 instead of the improved NF-P12 FLX which has better airflow at lower noise.


There is no NF-P12 FLX.

There is a Noctua NF-S12B FLX 120mm Fan. But that doesn't work well on heatsinks. It doesn't work well with the type of high back pressure that heat sink fans face in that type of application.

When the NF-P12 runs into back pressure it is able to keep the air flowing even against the impedance. In such circumstances, the NF-S12B FLX keeps turning, but fails to move much air.


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PostPosted: Mon Jun 14, 2010 6:03 am 
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Joined: Sun Jun 13, 2010 9:20 am
Posts: 24
Location: Warsaw, Poland
ces wrote:
bestwestern wrote:
I think it's strange that Noctua is including their old 120 mm fan NF-P12 instead of the improved NF-P12 FLX which has better airflow at lower noise.


There is no NF-P12 FLX.

There is a Noctua NF-S12B FLX 120mm Fan. But that doesn't work well on heatsinks. It doesn't work well with the type of high back pressure that heat sink fans face in that type of application.

When the NF-P12 runs into back pressure it is able to keep the air flowing even against the impedance. In such circumstances, the NF-S12B FLX keeps turning, but fails to move much air.


Is it also true for 140mm noctua fan because the only one they have right now is designated as FLX too ?

And would this cooler have better noise characteristics if we use two identical fans ? For example by using Noctua NF-P14-FLX on front and middle ?


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 Post subject:
PostPosted: Wed Jun 23, 2010 4:48 am 
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Joined: Wed Jun 23, 2010 4:44 am
Posts: 7
Location: Asturias
michaelius wrote:
ces wrote:
bestwestern wrote:
I think it's strange that Noctua is including their old 120 mm fan NF-P12 instead of the improved NF-P12 FLX which has better airflow at lower noise.


There is no NF-P12 FLX.

There is a Noctua NF-S12B FLX 120mm Fan. But that doesn't work well on heatsinks. It doesn't work well with the type of high back pressure that heat sink fans face in that type of application.

When the NF-P12 runs into back pressure it is able to keep the air flowing even against the impedance. In such circumstances, the NF-S12B FLX keeps turning, but fails to move much air.


Is it also true for 140mm noctua fan because the only one they have right now is designated as FLX too ?

And would this cooler have better noise characteristics if we use two identical fans ? For example by using Noctua NF-P14-FLX on front and middle ?


Wow.. I was wondering exactly the same question;

First, its possible to replace the front NF-P12 for another NF-P14?
Second, would it be any improvement in terms of noise/workflow?


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 Post subject: Re: Noctua NH-D14 flagship dual-fan CPU cooler
PostPosted: Fri Dec 28, 2012 11:51 am 
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Joined: Fri Sep 03, 2010 1:04 pm
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Location: Lima, Perú
I know this is a 2010 article, but: the features and specs tables in the first page are titled as "NH-U12P" :wink:


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 Post subject: Re: Noctua NH-D14 flagship dual-fan CPU cooler
PostPosted: Sun Dec 30, 2012 1:48 am 
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Joined: Fri Jan 05, 2007 9:48 am
Posts: 80
Location: Cluj-Napoca, Romania
Moving my post from article discussion / recommended heatsinks here:

I read that the genesis is the no1 HS for quiet/silent cpu cooling.
I do not understand why it is not the NH-D14 because looking at the results from the Noctua test with 2 nexus fans:

-12V/16dBA: 31 delta C
- 9V/13dBA: 33 delta C
- 7V/12dBA: 36 delta C

These temps are lower per dBA than any other cooler tested with the ref. 140 mm Noctua:

Prolimatech Genesis seems the best but:
- 7V/15-17dBA: 37 delta C
- 6V/12-14dBA: 39 delta C

The Noctua with 2 nexus 120 fans wins by 6 deg C at 16dBA and by 3 deg C at 12 dBA

WHY ?

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i5 3470 + heavily lapped Mugen3 RevB + stock Scythe SS pw @ 560 rpm, Intel DZ77SL-50, Gigabyte 6770 passive + 120 mm Noctua @ 460 rpm, 8GB DDR2, 60GB OCZ vertex 3 system SSD, 2*1TB HDD elastic band mounted, Seasonic X460W, SOLO II (Nexus intake + exhaust at 660 rpm)


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 Post subject: Re: Noctua NH-D14 flagship dual-fan CPU cooler
PostPosted: Sat Dec 14, 2013 11:21 am 
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Joined: Sun Aug 11, 2002 3:26 pm
Posts: 11822
Location: Vancouver, BC, Canada
ghia -- the recommended cooler pages haven't been updated for 3 years. Better to consult the comparison tables in recent review articles instead.

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Editor/Publisher, SPCR
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