Today we will focus on fans, models Noctua NF-A9 PWM and NF-F12 PWM, which not only noted in the summary tables of our results, but also in the future take part in the tests of the coolers producer. What is remarkable and characteristic of a vane from the Austrians?
One of the most interesting technologies is AAO Frame, which is a function of the acoustic optimization and includes anti-vibration pads placed in places of fastening of the fan.
Second – Stepped Inlet Design – is a step structure inside of the frame body, improving the aerodynamic properties of the fan.
Latest technology represents a longitudinal groove on the fan blades. They distribute the air flow, increasing its rate in other areas of the blades.
Models turntables Noctua have another feature – the use of a self-stabilizing bearings second generation SSO2-Bearing. They represent the hydrodynamic bearings comprising an additional magnet, which supports the armature axis stability augmentation, therefore, the magnetic field. The second generation is characterized by metal inserts and placing the magnet close to the axis of the anchor. Application SSO2 bearings primarily increases the reliability of the fans, so that their life is an impressive 150,000 hours.
The fans have PWM control thanks to the integrated controller. Noctua technology developers implemented using chip NE-FD1, which provides a smooth increase in the speed of rotation by supplying not rectangular and trapezoidal pulses, avoiding a sudden increase in torque.
Besides great attention is paid to the bearings, and brass as the material used, thereby increasing the degree of manufacturing precision and long term stability of operation.
The developers have equipped the inside of the frame specialized recesses that according to the creators to create a turbulent layer and prevent flow separation at the time of the air intake, preventing the loss of part of the flow and reduce the pressure, as well as helping to lower the noise level.
These technologies provide irrotational air flow at the outlet, thereby allowing to remove heat efficiently when used as a part of the cooling system processor.
In testing group were four fans which was split into pairs and tested individually. And let us start with our “baby” – a model NF-A9 PWM.
Fan Noctua NF-A9 PWM comes packaged with the traditional manufacturer beige colors and discreet graphic arts industry. On the front panel, the developers noted model name, belonging to the premium class, the list of supported technologies and QR-code, leading to the official website.
On the reverse side is a model for the description of a fan in nine different languages, including Russian. The separate column brought together detailed specifications Noctua NF-A9 PWM, from the speed of rotation and ending static pressure measured in millimeters of water column.
For folding packaging elements hiding informative tabs with supporting technology and explanatory panels. Note the transparent window through which the visible hero of the occasion and the delivery.
The box is a kind of booklets, which allows to get acquainted with the Noctua NF-A9 PWM closer without removing the latter from boxing.
Fan, together with a joint placed in a blister pack made of transparent plastic, some paper documents and booklets are in a niche.
In addition to his Noctua NF-A9 PWM includes:
L.N.A.-adapter (Low-Noise Adapter) is a cable with a resistor to reduce the fan speed in all modes and noise reduction.
Noctua NF-A9 PWM fan is a classic 92 mm, standing out against the background of their fellow only non-standard colors of beige and brown colors. It’s no secret how much had to endure criticism developers iz-za selected shades, however, komu-to they were like, and indifferent was represented by a series of Redux with minimal configuration and with dark colors, which we can talk in the future .
Dimensions Model up 92 x 92 x 25 mm. Noctua NF-A9 PWM has the support of almost all modern technologies by the developers, so that within the same line of developers all honestly: if a top fan support every function, and the youngest spinner in the series too.
About cream-brown coloring, we talked, touch on the positive side. The reverse side is notable for the presence of stickers with the indication of the type of SSO2 bearings (self-stabilizing oil bearing of the second generation), as well as the basic parameters of the power supply. Fan power consumption is very low and amounts to 1.2 W at a current of 0.1 amps.
To reduce noise and vibration damping silicone pad is used as a fastening corners.
Fan cable length in the rubber sheath is only 20 cm. This deficiency is compensated with supplied extension cord. Four-connectivity allows you to enjoy the pleasures of the PWM-adjustment.
Fan Noctua NF-F12 PWM comes packaged with a similar design. Developers marked the model name and a list of supported technologies in which items were added, and the QR-code will allow you to go to the official share and get acquainted with the features in more detail.
Description turntables in Russian raises a smile, some phrases to get a simple translators. Table with characteristics reveals many nuances and equipment.
Packing-book is made with canons from Noctua, and allows you to visually see the fan.
Noctua NF-F12 PWM in the box is in a transparent blister pack. It is surrounded by the faithful filed, including:
Model Noctua NF-F12 PWM differs from its predecessor not only in size but also the shape of the blades, which to this fan are designed exclusively for the new technology, and was named Focused Flow. This design of the blades impact on improved performance, reduced noise levels and increase reliability. Wider edges and curved shapes allow fans to participate more effectively in the cooling radiators for what Noctua NF-F12 PWM fits best.
The fan has a standard size of 120 x 120 x 25 mm. The colors allow you to instantly know the developers and producers 🙂
Noctua NF-F12 PWM built using SSO2 bearings (self-stabilizing oil bearing of the second generation), and boasts low power consumption.
Silicone nozzles allow to reduce vibration and noise level of the merits mention their unification with the models of the series NA-SAVP1 of Chromax line. On it we discussed in previous material.
The main purpose of accessories Chromax Anti-vibration pads – to diversify and refresh the appearance of the fan. Some examples of using Noctua Chromax.
Connection to a PC is organized via a 4-pin connector with a rubberized wire 200 mm in length, which can be increased with the help of complete extension.
Develop skills in testing many component parts in recent years made it possible to develop a technique based on the use of fan controllers, turntables are able to regulate the rotation speed by changing the voltage in the range 3,0-12,0 Volt.
For models Noctua NF-A9 PWM and Noctua NF-F12 PWM starting voltage was 5 V, although sometimes at the level of 4.5 times at times they “came to life”.
declared fan speed 2000 rev / min and 1500 rev / min, respectively marked by about 10% developer scatter.
Schedule fan speed depending on the voltage.
Fan noise level depending on the rotational speed. Indoor noise level of 28.0 dBA.
Fully silence for Noctua NF-A9 PWM guaranteed to 1300 rev / min at maximum speed noise sources do not come away from the rotor, and from the air flow passing through the mounting inserts from the engine to the housing. Characterized by soft whistle.
Model Noctua NF-F12 PWM noted by similar sound effects and complete silence is reached up to 1000 rev / min.
Despite advanced age and presence on the market, the model Noctua NF-A9 PWM and Noctua NF-F12 PWM is still in service and are not going to leave his post. Fans built by all modern canons of using advanced technology, and most importantly – have a low noise level and high performance, each in its segment. It is not surprising that the developers do not cease to produce new coolers and radiators, equipping last specimens.