NoiseBlocker eLoop BI2-PS PWM, BI4-PS PWM and BI4-3 – Test and Review

Back in 2012 when the eLoop series was introduced for the first time, offering just 120mm fans I had the chance to test and review B12-3, B12-P and B12-4. Models, which for that time offered revolutionary design and very, very serious performance capabilities. A few years later, the guys from NoiseBlocker expanded the series by including a 140mm branch and in additions 2 new models entirely in black.

For this test I’ve received the 3 brand new additions to the series aka eLoop BI2-PS PWM, BI4-PS PWM and BI4-3 fans, which I am really eager to test and review and check how they will perform.

All of the fans arrived to me to perform this test and review in the typical for the company pretty big and solid carton packages entirely in glossy black for the PS models and white/grey for the white/black fan. On the front side of all the boxes there are big pictures of the fans accompanied by the basic but still most important technical details. Of course, there are some labels of the awards won and the Developed in Germany Logo.

 eLoop BI2-PS PWM eLoop BI4-PS PWM  eLoop BI4-3

 

Of course, the full technical specifications regarding the products, some additional information regarding the design and technologies used so these fans can be created are thoroughly described on the back of the packages

Enough about the packages, so let’s put them aside and proceed with checking the fan structures.

 

NB-eLoop BI2-PS PWM,  BI4-PS PWM and BI4-3 STRUCTURE

As soon as I had the chance to touch the fans for the first time, I saw that they are in the typical NB eLoop signature, which features a very solid and reliable frame with rubber shock absorbing pads in each corner and very stable and really high-tech looking propeller. The three samples which I got are identical in matter of structure and the only differences are the physical dimensions with the delivered corresponding cooling performance and the colour scheme.

So, let’s check the structure and features of the fans, which according to the manufacturer are optimized for the best possible balance between airflow and noise levels.

eLoop BI2-PS PWM Front eLoop BI4-PS PWM Front eLoop BI4-3 Front

 

All 3 fans are designed and manufactured with a square, pretty thick and very solid, entirely in black matte frame, made of reinforced fibreglass PBT, which for the BI2-PS PWM is with dimensions of 120 x 120 x 25mm (105 x 105mm screw hole pattern), while for BI4-PS PWM and BI4-3 the frames are with dimensions of 140 x 140 x 25mm (125 x 125mm screw hole pattern). On each corner of the frames there are cuts in which the detachable shock absorbing rubber pads can be installed. For the models in black the shock absorbing pads are in black, while for third model they are white. And to improve the aesthetics of the fans all over the frames there are small hexagon engravings.

All 3 new additions to the series are equipped with the iconic and really high tech propellers which offer:

  1. six pretty wide and not very sharply angled, entirely in black glossy colour blades for the BI2-PS PWM model
  2. nine pretty wide and not very sharply angled, entirely in black glossy blades for BI4-PS PWM and entirely in glossy white for the BI4-3 version.

All of the blades part of the propellers feature focusing the airflow channels on the back side and all of them are connected to each other with the typical for the series balancing cylinder on the outer edge, which is included to reinforce the overall durability of the propellers. The formed propellers are rotating at 1mm distance from the cylinder of the frame, so any bending or rotational fluctuation could result in total stop of operation of the fans. In fact the whole structure of the products is really complicated and very precise.

eLoop BI2-PS PWM Back eLoop BI4-PS PWM Back   eLoop BI4-3 Back

 

The connection between the pretty solid frames and the very futuristic looking propellers is done by position-invariant magnetic NB-NanoSLI® 2 bearing, entirely designed for extreme low noise operation featuring:

  1. NB-EKA P2 Drive made to deliver no pulse noise, very low starting voltage, auto restart function, motor protection, speed signal line and anti dust protection.
  2. Bayer® Makrolon® rotor with very high quality synthetic material with anti-dust surface.
eLoop BI2-PS PWM eLoop BI4-PS PWM eLoop BI4-3

 

The powering and regulation for all three fans is done via very short cable, which is coming out of the frames to which the users have the option to connect either 200mm or 500mm long, entirely sleeved in black mesh 4pin for the black models and 3pin for the white version cables and connectors. Feature, which I find really useful and very attractive, which will definitely improve the overall appearance inside every modern case.

With these components and features added to the fans they are capable to achieve:

  1. BI2-PS PWM – maximum of 1500 revolutions per minute with airflow level of 98.7 m³/h and noise level of 21 dBA.
  2. BI4-PS PWM – maximum of 1200 revolutions per minute with airflow level of 142.6 m³/h and noise level of 24 dBA.
  3. BI4-3 – maximum of 1400 revolutions per minute with airflow level of 178.3 m³/h and noise level of 28.7 dBA.

I believe it is time to put the fans aside for the moment and pay attention to the additional accessories.

 

NB-eLoop BI2-PS PWM,  BI4-PS PWM and BI4-3 ACCESSORIES

  eLoop BI2-PS PWM eLoop BI4-PS PWM eLoop BI4-3

 

All 3 fans are accompanied by absolutely identical pretty extensive accessories pack featuring:

  1. 200mm cable extender
  2. 500mm cable extender
  3. 4 screws and 4 nuts
  4. 8 rubber dumpers for reducing the vibrations

I believe the time has arrived to install the three fans on my test stand and check out how they will perform,

 

NB-eLoop BI2-PS PWM,  BI4-PS PWM and BI4-3 TESTS

The tests will be conducted in my standard way. I will install the fans and test them at 5V/7V/9V/12V and my goal will be to check the performance of the products in real conditions. They will be tested under close-to-perfect conditions, not taking into account any external factors. The results achieved during the test can in no way be the same if the models are mounted on a cooler or on the case fan slot of any modern computer case. I will measure the amount of air going through the fans for one hour and their speed. For this I use a fan controller, a voltage meter, an anemometer and a stand made specifically for this purpose.

And this is what the fans look like installed on my test stand:

The test results are shown in the following charts:

Airflow through the fans at 5V, 7V, 9V, 12V

Propeller rpm during the tests at 5V, 7V, 9V, 12V.

The anemometer showed the following air speed passing through the propellers:

After mounting the fans onto the stand, and leaving them to rotate for about 60 minutes at maximum speed, it was time for the tests to begin.

As with my other tests, again I started with a gradual increase of the voltage through the Lamptron FCT starting at 0V and BI2-PS PWM made at least one stable revolution at about 5V, while the BI4-PS PWM and BI4-3 models started rotating at 4V. Of course, to do the tests for all 3 fans I had to set the operational voltage to 5V.

 

Through the first test conducted at exactly 5V:

  1. BI2-PS PWM was rotating at 810 revolutions per minute, providing stable airflow of 45.6 cubic meters per hour
  2. BI4-PS PWM was rotating at 690 revolutions per minute, providing stable airflow of 62.88 cubic meters per hour
  3. BI4-3 was rotating at 660 revolutions per minute, providing stable airflow of 58.56 cubic meters per hour

All of the fans were deadly quiet.

At the second test conducted at exactly 7V,

  1. BI2-PS PWM was rotating at 1080 revolutions per minute, delivering stable airflow of 62.88 cubic meters per hour
  2. BI4-PS PWM was rotating at 930 revolutions per minute, delivering stable airflow of 72.96 cubic meters per hour
  3. BI4-3 was rotating at 930 revolutions per minute, delivering stable airflow of 72.96 cubic meters per hour

All of the fans remained absolutely quiet.

At the third test conducted at 9V, 

  1. BI2-PS PWM was rotating at 1350 revolutions per minute, delivering stable airflow of 80.16 cubic meters per hour
  2. BI4-PS PWM was rotating at 1110 revolutions per minute, delivering stable airflow of 106.56 cubic meters per hour
  3. BI4-3 was rotating at 1080 revolutions per minute, delivering stable airflow of 96 cubic meters per hour

At this test, the first model remained silent, while the second and the third models started generating a tiny noise coming out of the air passing through the propellers.

At the last test conducted at 12V, all fans reached their maximum performance, which is:

  1. BI2-PS PWM was rotating at 1680 revolutions per minute, delivering stable airflow of 101.76 cubic meters per hour
  2. BI4-PS PWM was rotating at 1370 revolutions per minute, delivering stable airflow of 132.48 cubic meters per hour
  3. BI4-3 was rotating at 1320 revolutions per minute, delivering stable airflow of 119.04 cubic meters per hour

At this test, the first model started generating a tiny noise, while the other 2 fans became really noisy.

 

NB-eLoop BI2-PS PWM,  BI4-PS PWM and BI4-3 CONCLUSIONS

1. NB-eLoop BI2-PS PWM,  BI4-PS PWM and BI4-3 Performance:

I believe I’ve spent some real quality time having fun with the most versatile models in the eLoop series, which definitely follow the company standards and quality demands to feature a wide range of advanced technologies combined together to deliver the best possible cooling performance/noise level balance with outstanding visual appearance.

All three fans offer a wide operational range to deliver a wide range of possibilities, which led me to think that they will be a good choice to be installed on a case fan slot to boost the overall airflow inside every modern case and also be a main cooling unit for CPU heat sinks or water cooling radiators compatible with either 120mm or 140mm fans cooling low, middle or high grade processors working at default or overclocked frequencies.

Apart from that, the detachable power cables can definitely improve the overall airflow inside every case by reducing the cables net inside every modern case.

Regarding the noise level I was pretty impressed with the 120mm model which was absolutely quiet through the 5, 7 and 9V tests and started generating just a tiny noise from the air passing through the propeller at 12V test, while the other two models were noisier through the 9 and 12V tests, while at 5 and 7V they were pretty quiet.

2. NB-eLoop BI2-PS PWM,  BI4-PS PWM and BI4-3 Appearance:

All of the three fans offer absolutely identical very solid and very futuristic looking frame and propeller structure and are made entirely to provide a pretty serious performance boost and at the same time outstanding appearance for any modern case featuring an entirely painted in black interior. The thing which I find the most attractive is the perfect balance between stylish and simple colour schemes combined with a propeller design which definitely looks like it is from the future.

I think NB-eLoop BI2-PS PWM deserve the following reward:

Best-Visual-silence

While NB-eLoop BI4-PS PWM and BI4-3 deserve:

NB-eLoop BI2-PS PWM has been added to the 120mm fans catalogue.

NB-eLoop BI4-PS PWM and BI4-3 have been added to the 140mm fans catalogue.

Official price (MSRP): NB-eLoop BI2-PS PWM:  unknown

Official price (MSRP):NB-eLoop BI4-PS PWM:  unknown

Official price (MSRP):NB-eLoop BI4-3:  unknown

Warrnaty: 72 months

I thank NoiseBlocker for the test samples.

NoiseBlocker eLoop BI2-PS PWM, BI4-PS PWM and BI4-3 – Test and Review
9.6 Total Score

Performance (eLoop BI2-PS PWM)
8
Noise Level (eLoop BI2-PS PWM)
10
Performance (eLoop BI4-PS PWM)
10
Noise Level (eLoop BI4-PS PWM)
9
Performance (eLoop BI4-3)
9
Noise Level (eLoop BI4-3)
9
Additional accessories
10
Appearance
10
User Rating: 4.85 (1 votes)

Dobrin Krastev is the owner, reviewer and newsman of www.DVTests.com with more than 15 years' experience in personal computers, server and storage systems, UPS, peripheral devices and software. Passionate about testing and reviewing, AMD overclocking using AM3 990FXA and AMD FM2 A85X test systems and building modding projects.
1 Comment
  1. Reply PepiX 07.11.2017 at 22:33

    Wow.. fantastic looking pieces.. Loved the review!!

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