Big test of 120 mm fans. We known everything about eight of them

Fan details

To write that we have something mapped out to the last detail is perhaps too bold, but after proper preparation, few pieces of hardware are as easy to evaluate as fans. Of course, this had to be preceded by long preparations, developing a methodology, but you already know the story. What you don’t know yet is the first fruit, or rather the results of Akasa, SilentiumPC, SilverStone, Xigmatek or more exotic Reeven fans.

Regular readers of HWCooling know the environment in which we test fans. Whether from the articles dedicated to the methodology (here is something about the prototype, and here to the final version) or from dust filter tests.

For new visitors, it should be noted that all tests take place in a wind tunnel. We have built it ourselves according to the specific requirements for correct fan tests. However, there are bound to be voices about the “unnatural” environment and about how fan tests inside computers have more meaning. They certainly don’t.

Sure, it’s important to test fans with real obstacles, but it’s better to have airflow and pressure differences as the output than CPU temperature differences. These are lower or higher exactly because a particular fan has a lower or higher airflow or pressure. These key variables for fans are naturally affected by obstacles such as dust filters, grilles or cooler radiators. All of these are used in the tests.

With or without obstacles, we test the fans at different fixed noise levels. They are set in such a way that both users seeking noiseless operation and those who are primarily concerned with performance regardless of noise level will find their results. And since the same dBA levels can sound different, these measurements are supplemented by frequency characteristics of the sound. These show which frequencies are more pronounced and which, on the other hand, are weak. So much for a brief introduction to the testing. For those who have not yet read the detailed discussion of the test methodology, we recommend taking a look at it, chapters 2 to 11.

Fans for reference

All tested models have a 120 mm format and a thickness of 25 mm, so nothing non-standard. An overview of the basic parameters can be found in the table below. Below that are some photos – front and rear panel plus blade details.

Half of the fans use some form of RGB LED lighting, but since these are outgoing models, at best their connection is either 12-volt (Akasa Vegas X7 and SilentiumPC Sigma Pro Corona RGB), via 4-pins, which is no longer used today, or even shared. This means that the lighting shares a common power supply with the motor, and the effect of speed has an impact on brightness intensity. This is the case with Reeven Kiran fans or the really old Xigmatek XLF-F1256. For this first test, we deliberately chose discontinued and rather “ordinary” models. This was to get benchmark results for evaluating more attractive fans.

The favoured for the best results should be the Reeven Kiran and the SilverStone SST-FQ121. Reeven has the highest reported static pressure (2,95 mm H2O) and SilverStone the best airflow (114,68 m3/h).

* When reading performance values, a certain amount of tolerance must always be taken into account. For maximum speeds, ±10% is usually quoted, minimum speeds can vary considerably more from piece to piece, sometimes manufacturers will overlap by as much as ±50%. This must then also be adequately taken into account for air flow, static pressure and noise levels. If only one value is given in a table entry, this means that it always refers to the situation at maximum speed, which is achieved at 12 V or 100% PWM intensity. The manufacturer does not disclose the lower limit of the performance specifications in its materials in that case. The price in the last column is always approximate.

Akasa Vegas X7


Reeven Coldwing 12


Reeven Kiran


SilentiumPC Sigma Pro 120 PWM


SilentiumPC Sigma Pro Corona RGB 120


SilverStone SST-AP121


SilverStone SST-FQ121


Xigmatek XLF-F1256

The article continues with further chapters.

Flattr this!

Akasa Gecko Pro: An SSD cooler with a “different” orientation

The successor to the SSD cooler, which didn’t have much competition in its price range. That’s one way to introduce the Gecko Pro, which is a bit more expensive, but also more refined (in terms of mounting as well). And it also has a distinctive feature that clearly distinguishes it from other coolers – the fins are not longitudinal (as is common), but in width. The price to cooling performance ratio is again excellent. Read more “Akasa Gecko Pro: An SSD cooler with a “different” orientation” »


New dual-tower Akasa cooler, the Soho H7, comes after 10 years

To celebrate the launch of the Akasa Alucia H4 and Soho H4 coolers with Plus attributes (i.e. finally with LGA 1700 support), the chunky dual-tower cooler was also featured in one image. All its parameters are already known. After a very long time, the most powerful Akasa cooler to date – the Venom Medusa model – will see a successor. Akasa’s materials state that this cooler is optimized for the most powerful Intel Alder Lake processors. Read more “New dual-tower Akasa cooler, the Soho H7, comes after 10 years” »


Akasa Alucia SC12: Efficient shapes vs. soft material

Few fans can wow us at first glance the way the Alucia SC12 from Akasa has done. Its build looks quite compelling in this price range. However, on a second look after detailed testing comes some sobering. But even though the high (even exorbitantly high) expectations have not been met, in some aspects the Alucia SC12 beats attractive, similarly cheap competitors in some situations. Read more “Akasa Alucia SC12: Efficient shapes vs. soft material” »


Comments (2) Add comment

  1. Although the test a super, non of the recommended Fans can be bought today making it intentesting but overal not that usefull. For next test, please include some fans that are expeded to be solf for at least one year later.

    1. The selection of older, outdated fans for this test was purposeful. The goal was to get some results/ some basic idea to have something to go off of when evaluating current fans. When you look at the current database, it overwhelmingly contains fan models that are widely available in stores:

      The first eight have been selected so that later on none of these models will lack (since they are no longer sold) an in-depth evaluation of all aspects, as we do at the end of the “solo” tests, of which there are 26 after this article.

Leave a Reply

Your email address will not be published. Required fields are marked *