Reeven Kiran and Zephyros RED – Test and Review

For the past several years I’ve had the chance to test and review almost all of the fans listed inside the company’s portfolio. Most of the models were definitely made as very well balanced products or pure performers. Others were entirely made for silent operation but the latest arrivals, aka Reeven Kiran and Zephyros RED, offer something more. And that is a more colorful appearance:

  1. Reeven Coldwing 14 RM1425S17B-P
  2. Reeven EUROS RA1225F16C-P and 20C-P
  3. Reeven COLDWING 120MM Silent and 120MM Silent-perf. with PWM 
  4. Reeven COLDWING 120MM Performance and 120MM Performance PWM

To perform this test and review I received Reeven Kiran and Zephyros RED 120mm fans, which arrived to me placed inside two pretty solid carton boxes featuring lots of pictures and technical details in several languages.

Reeven Kiran package Reeven Zephyros RED package


Kiran arrived inside a very colorful package featuring a big RGB picture of the fan on the front panel accompanied by some basic technical details, while all other details regarding the FDB bearing, full technical specification and several small pictures of the different back light colors are on all other sides of the box.

In addition, inside the box there is a second smaller white box right next to the fan holding all of the additional accessories.

On the other hand, Zephyros RED was provided with much simpler box, made of recycled black/brown carton, with again the main technical features on the front panel, while the full technical specification is on the back side of the package written in several languages.

Personally, I really enjoyed Kiran’s package, while Zephyros’s package was nothing special but after all this review is about the fans, so let’s leave the packages aside and check the fan structures.


Reeven Kiran and Zephyros RED STRUCTURE

After I took both of the fans out of their packages for the first time and I had some fun examining their structures I can say that the only similarities between both models is that they have propellers, frames, backlight and that they are spinning.

So, let’s proceed with checking the fan structures, capabilities and features.

Reeven Kiran back view Reeven Zephyros RED back view


At first sight Reeven Kiran definitely appears as the product with the much more sophisticated structure. The fan itself is equipped with round frame around the propeller with 4 non-detachable corners also holding the pretty soft rubber pads which will reduce the vibrations of the fan. If there are any at all. The frame itself is with dimensions of 120 x 120 x 25mm and is designed as a two-component structure, which features pretty thin but really solid back, fused together with round semi-transparent white cylinder, which is just around the propeller. With this structure the RGB back light will definitely be dispersed evenly.

With this frame, the fan should be installed on a 120mm fan slot or CPU heat sinks with 105 x 105mm screw hole pattern.

The fan itself is equipped with a pretty solid, semi-transparent white propeller with 11 not very wide but very sharply angled blades. With this structure it is obvious that this model is engineered for high airflow delivery and cooling efficiency while being installed on a CPU heat sink and also deliver even RGB back light dispersion.

The connection between the frame and the propeller is done by Fluid Dynamic Bearing, which should deliver long life span of up to 120.000 hours of constant and also quiet operation. The motor of the fan is powered and regulated by a 500mm long 4pin PWM sleeved in black mesh cable and connector.

With this bearing and structure the fan is able to work at 400(±200)-1500(±10%) revolutions per minute range, delivering airflow level of 14.0~64.8 CFM, static pressure level range of ​0.10~2.95mm H2O at noise level range of 6.0~33.6dBA.

And since there is an RGB back light there is an additional shorter cable with a small switch which when pressed will change between 7 colors and 3 lighting modes, which will provide vibrant colors and vivid animations and will definitely add a stunning element inside your system. Also there is a memory function, which will keep the settings unchanged even if the PC has been switched off.


On the other hand, Zephyros offers a pretty simple and very standard structure with square, entirely glossy black frame with dimensions of 120 x 120 x 25mm and 105 x 105mm screw hole pattern. The frame itself does not feature any rubber pads for vibrations absorbing but is equipped with 4 LEDs in each corner to provide even back light. The back light for this model is static and could be white, red or blue. Also there is a version entirely in black.

The propeller installed is completely transparent with 9 wider compared to the previous model but still very sharply angled blades. The interesting thing regarding the propeller is that on the front side of the blades there are pre-cut airflow focusing channels to improve the overall performance of the product.

And to be able to perform its duties, the connection between the frame and the propeller is done by sleeve bearing, which is able to operate of up to 20.000 hours. The motor itself is powered and regulated by a 3-pin black ribbon cable, which also features a pre-installed 4pin molex connector and is able to deliver 1000 revolutions per minute, airflow level of 60.2CFM, static pressure level of 0.052inch H2O at noise level of 21.6dBA.

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



Reeven Kiran accessories Reeven Zephyros RED accessories


Both of the fans are accompanied by 4 black metal screws but Kiran also features additional informational manual and Y-PWM spliter.

Nothing special and nothing really fancy here. Both of the fans are provided with the basic accessories for their purpose.

Also, the manual is mostly in unknown for me language but the pictures are simple enough to understand.

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


Reeven Kiran and Zephyros RED 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

Propellers 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 Reeven Kiran made at least one revolution per minute at about 4.5V, while Reeven Zephyros RED started rotating at about 3V. Also the backlight of the first model started glowing at about 6.5V, while Reeven Zephyros RED lid at about 2.5V. The light for the second model was really unstable but it was visible. To perform the tests I increased the operational voltage for both of the fans up to 5V.

Test at 5V:

At the first test conducted at exactly 5V:

  1. Reeven Kiran was dead quiet while rotating at 720 revolutions per minute, providing stable airflow of 57.12 cubic meters per hour
  2. Reeven Zephyros RED was also quiet while rotating at 540 revolutions per minute, providing stable airflow of 42.72 cubic meters per hour

Test at 7V:

At the second test conducted at exactly 7V:

  1. Reeven Kiran was rotating at 1020 revolutions per minute, delivering airflow level of 80.16 cubic meters per hour. The fan started generating a tiny noise.
  2. Reeven Zephyros RED remained quiet while rotating at 720 revolutions per minute, providing stable airflow of 60 cubic meters per hour

Test at 9V:

At the third test conducted at 9V:

  1. Reeven Kiran was rotating at 1270 revolutions per minute, which was causing a bit more noise while delivering airflow level of 100.32 cubic meters per hour.
  2. Reeven Zephyros RED remained quiet while rotating at 840 revolutions per minute, providing stable airflow of 71.52 cubic meters per hour

Test at 12V:

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

  1. Reeven Kiran  was rotating at 1620 revolutions per minute, delivering airflow level of 127.68 cubic meters per hour. The fan was really loud.
  2. Reeven Zephyros RED was dead quiet while rotating at 1020 revolutions per minute, providing stable airflow of 85.92 cubic meters per hour


Reeven Kiran and Zephyros RED CONCLUSIONS

1. Reeven Kiran and Zephyros RED Performance:

Reeven Kiran and Zephyros RED are two pretty interesting fans made with specific purpose, features and most of all price points.

The first one is definitely the pricier product more suitable to be a main cooling unit when installed on a CPU heat sink or water cooling radiators compatible with 120 mm fans, since it provides very good balance between airflow, static pressure and noise level. Apart from being a pretty good performer, the fan offers an additional appearance feature, which just looks great. The integrated RGB back light is dispersed nicely and evenly with very bright and amazing looking colors which could make every rig a real eye catcher.

Throughout the first test the fan was dead quiet, while during the second and the third tests it was definitely generating some noise coming out of the air passing through the blades of the propeller. At full speed the fan was very well performing but really loud.

On the other hand, Zephyros RED is an economically priced solution with simpler structure and features but at the same time it still is a very good performer. For me this fan is much more suitable to be installed on any case fan slot and to improve the overall airflow inside every modern case and keep any hardware cool and stable. Yes, the fan can handle the purpose to also cool 120mm compatible CPU cooler heat sinks but without any serious load or drastic tests and overclocking attempts.

In addition, the product is equipped with a LED static backlight, which could improve the overall appearance of the system.

Regarding the noise, the fan was pretty quiet and it is suitable for silence seeking users, who look for comfortable environment while watching movies or just browsing the web.


2. Reeven Kiran and Zephyros RED Appearance:

Apart from the pretty good cooling capabilities, both of the products part of the Reeven’s portfolio offer very pleasant ambient backlight combined with pretty aggressive looking design. Yes, Kiran offer much more visual options with its RGB LEDs and still Zephyros RED can also be a really good visual addition to every modern case.  But keep in mind that the back light is static and the right color should be selected on purchase.

I think Reeven Kiran deserves:

While Reeven Zephyros RED deserve the following award:


Reeven Kiran and Zephyros RED have been added to the 120mm fans catalogue.

Official price (MSRP):Reeven Kiran: 16.99 USD

Official price (MSRP):Reeven Zephyros RED:  6.99 USD

Warranty: 24 months


Special thanks to Reeven for providing us with a test sample!

Reeven Kiran and Zephyros RED – Test and Review
8.3 Total Score

Performance (Reeven Kiran)
Noise Level (Reeven Kiran)
Performance (Reeven Zephyros RED)
Noise Level (Reeven Zephyros RED)
Additional accessories
User Rating: Be the first one!

Dobrin Krastev is the owner, reviewer and newsman of 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.
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