Noctua NF-S12B FLX Ultra Quiet 120mm Flexible Cooling Fan
The NF-S12B FLX is a premium quality fan that offers full flexibility in quiet to ultra-quiet case cooling.
Succeeding the vastly successful NF-S12, the NF-S12B is a next generation quiet fan featuring Noctua's advanced SCD2 technology as well as a highly optimised blade geometry with Bevelled Blade Tips that improves its award-winning predecessor's airflow efficiency by up to 10%. Topped off with Noctua's time-tested SSO-Bearing, six years warranty and versatile 1200/900/600 RPM speed settings, the NF-S12B FLX is a premium quality fan that offers full flexibility in quiet to ultra-quiet case cooling.
- Highly optimised impeller with Bevelled Blade Tips
- Two speed settings for maximum quietness
- Smooth Commutation Drive 2
- Noise levels from only 6.2 dB(A)
- Six year warranty
|Blade Geometry||NF-S12B Blade Design with BBT|
|Rotational Speed ±10%||1200 PRM|
|Rotational Speed with L.N.A. ±10%||900 RPM|
|Rotational Speed with U.L.N.A. ±10%||600 RPM|
|Airflow with L.N.A.||44.6 CFM|
|Airflow with U.L.N.A.||28.9 CFM|
|Acoustical Noise||18.1 dB(A)|
|Acoustical Noise with L.N.A.||10.6 dB(A)|
|Acoustical Noise with U.L.N.A.||6.2 dB(A)|
|Static Pressure||1.31 mm H2O|
|Static Pressure with L.N.A.||0.76 mm H2O|
|Static Pressure with U.L.N.A.||0.34 mm H2O|
|Input Power||1.2 W|
|Input Current||0.1 A|
|Voltage Range||12 V|
|MTBF||> 150.000 h|
NF-S12B FLX x (8)
NF-S12B FLX x (8)
Anonymous - Posted: 8 Jul 2011 18:13
The choice of a silent 120-mm fan is nowadays a nightmare, even sticking to the high-end range. Is this fan providing all the good things you find in many reviews? Probably YES.
Some numbers: while it can go up to 1200 RPM, I feel that the limit in order to be in the "very silent" range is 900 RPM (ok, this depends on the damping quality of your case, among other factors), but you can go down to 300 RPM if you want to approach really the "inaudible" range. The last is the speed that I select when the pc is on in my bedroom at night time: this fan is clearly optimized for low speeds.
No vibrations whatsoever, a superb build quality and a delicious package complete the overview.
So what is wrong with it? The problem is that, after having read thousand of reviews, having pushed the comparisons to the limits of dB/speed/airflow/vibration considerations, you may end thinking that this Noctua is inaudible. Simply said, it is not; but like any other super-fan in this world. Would I buy it again? Yes!
COLIN ADAMS - Posted: 27 Aug 2010 20:56
I've tried other quiet fans but this one beats them all. Again excellent service from Quietpc.com :o)
Anonymous - Posted: 16 Jul 2010 12:37
Have bought these before due to low noise but shame that it has no switch to adjust the speed ,you have to change the wire (supplied).
Anonymous - Posted: 6 Jul 2010 14:46
Expensive yes, but worth every penny. I can barely hear them in my HTPC. Very efficient fans. 10/10.
Chris Mullins - Posted: 28 Mar 2010 15:40
...look no further than this.
Anonymous - Posted: 25 Mar 2010 13:54
I bought two Noctua fans. Other a bit smaller one - 92mm and fitted both into my case. my graphic card temp goes down approx 11-12 degrees if I close the case (all side walls attached). I put bigger one to the front - instead of the original one (very loud) and the smaller one as an exhaust to the back. very happy. both are slowed down to the maximum and i can only hear them if i go under my desk - within 10-20cm from case. other wise you do not notice them AT ALL and trust me - I hate any kind of buzzing or any noises in my room, so it is REALLY quiet!!
had small problems with fitting it without disassembling my case first as its a bit bigger than the original one in the case. i used those rubber parts, not screws. if i used screws - no problems with putting it in. dead simple.
Derek Hartley - Posted: 15 Sep 2009 20:44
When I replaced my noisy stock AMD CPU cooler with a much quieter Arctic Cooling Freezer 64 Pro I found the stock 92mm fan fitted to remove the hot air from the case was also making a lot of noise, so I decided to do the job properly and looked around for a 120mm fan, and after reading dozens of reviews and reports purchased a Noctua NF-S12B FLX, yes it did cost a bit more than the majority of fans on the market, but the old saying is certainly correct, "You get what you pay for" and for the amount of time I spend on my P.C. it was well worth it, it also dropped the case temperature down a couple of degrees, it is certainly the quietest fan I have ever heard, even on the highest speed, and am very, very pleased with my purchase from Quiet PC.19c7