Scythe Slip Stream 120 DB SY1225DB12M – Test and Review

In the past months, the guys from Scythe introduced several fan series and that includes the Slip Stream 120 DB too. A series offering 5 different models designed to provide the best possible airflow and static pressure levels, while maintaining low noise level and provide dual ball bearing for extremely long operational life of up to 350.000 hours.

The series itself includes:

  1. SY1225DB12SL working at 500 ±10% revolutions per minute with airflow level of 41,62 m³/h, static pressure level of 0,12mm H₂O at noise level of 7,5 dBA.
  2. SY1225DB12L  working at 800 ±10% revolutions per minute with airflow level of 68,24 m³/h, static pressure level of 0,34mm H₂O at noise level of 10.7 dBA.
  3. SY1225DB12M  working at 1200 ±10% revolutions per minute with airflow level of 116,4 m³/h, static pressure level of 0,92mm H₂O at noise level of 24.0 dBA.
  4. SY1225DB12H  working at 1600 ±10% revolutions per minute with airflow level of 149,8 m³/h, static pressure level of 1,46mm H₂O at noise level of 33.0 dBA.
  5. SY1225DB12SH  working at 1900 ±10% revolutions per minute with airflow level of 187,39 m³/h, static pressure level of 2,30mm H₂O at noise level of 37.0 dBA.

To perform this test and review I received the most balanced model in the series and that is SY1225DB12M, which was delivered to me in the typical for all of the company’s series, transparent plastic box through which we can see the structure of the fan and a carton cover hiding the additional accessories provided in the package.


On the front side of the carton cover there are the main technical details regarding the product, while the full technical specification, typically for Scythe written in several languages, is placed on the back side of the carton cover and is visible through on the back side of the plastic box.


Scythe Slip Stream 120 DB SY1225DB12M STRUCTURE

The fan itself is equipped with a pretty solid square plastic frame, entirely in black with dimensions of 120 x 120 x 25mm with a 105mm mounting holes and weight of 118 gramms. The frame itself is not equipped with any noise dampening material to prevent any noise generated from vibrations.


By being part of the Slip Stream series, SY1225DB12M is equipped with the typical smaller fan hub propeller with 9 not very wide but with sharply angled blades made to provide the optimal airflow / static pressure balance. The propeller itself is in dark grey matte colour.


And to perform its cooling duties the connection between the frame and the propeller of the fan is done by a 3-pin powered and regulated motor, which uses 2 high precision ball bearings. As a result of the small contact surface between the tread and balls, the friction and the wear of the bearing is reduced significantly, which benefits in higher durability and much better reliability of the fan reflected in an amazing MTBF of 350,000 hours constant operation. Another advantage of the new ball bearing is shown in a lifetime of smooth running together with a practically noise-free fan operation in marked contrast to plain bearing models.



I believe it is time to put the fan aside and check the additional accessories:


The standard Scythe Slip Stream 120 DB SY1225DB12M package features:

  1. a set of 4 metal screws for installing the fan to a case fan slot
  2. a set of 4 entirely painted in black rubber pins to attach the fan to a case fan slot
  3. 4-pin molex to 3-pin fan adapter. As addition, the tachometer cable should be attached to the motherboard, while the fan is being powered directly from the PSU.

I believe I’ve spent more than enough time checking the fan’s structure and accessories so I guess it is time to check how it will perform.


Scythe Slip Stream 120 DB SY1225DB12M TESTS

The tests will be conducted in my standard way. I will install the fan and test it at 5V/7V/9V/12V and my goal will be to check the performance of the product in real conditions. It will be tested under close-to-perfect conditions, not taking into account any external factors. The results achieved during the tests 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 fan for one hour and its 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 fan looks like installed on my test stand:


The test results are shown in the following charts:

Airflow through the fan 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 propeller:


After mounting the fan onto the stand, and leaving it to rotate for about 30 minutes at maximum speed, it was time to do the tests.

As with my other tests, again I started with a gradual increase of the voltage through the Lamptron FCT starting at 0V and Scythe Slip Stream 120 DB SY1225DB12M made at least one full revolution at about 2.5V. To do the first test I had to continue increasing the operating voltage to 5V.

Test at 5V:

At the first test conducted at exactly 5V, SY1225DB12M was rotating at 720 revolutions per minute and providing airflow level of 62.4 cubic metres per hour. At this test, the fan was completely silent.

Test at 7V:

At the second test conducted at exactly 7V,  SY1225DB12M was rotating at stable 900 revolutions per minute, providing airflow level of 82.56 cubic metres per hour. At this test the fan was still dead quiet.

Test at 9V:

The third test conducted at 9V, showed that the fan was rotating at 1080 revolutions per minute providing airflow level of 95.04 cubic metres per hour. At this test the fan started generating a tiny noise coming out of the air passing through the propeller.

Test at 12V:

At the last test conducted at 12V, Scythe Slip Stream 120 DB SY1225DB12M reached its maximum performance, which was airflow level of 114.72 cubic metres per hour at 1290 revolutions per minute. At this test the noise level became a bit more distinct.

After performing the review and the test it will be definitely fair to express my own thoughts regarding the product.


Scythe Slip Stream 120 DB SY1225DB12M CONCLUSIONS

1. Scythe Slip Stream 120 DB SY1225DB12M Performance:

SY1225DB12M is definitely the most balanced and versatile model in the series made to provide the best possible balance between airflow level, static pressure level and, of course, noise level.

The fan itself is a pretty good option to be the main cooling unit for CPU heat sinks or AIO radiators installed on low, middle or high grade processors working at default, a little bit and pretty high overclocked frequencies. On the other hand, the fan could also be a good option to be installed on a case fan slot since the starting voltage is 2.5V to boost the airflow inside every modern case compatible with 120mm fans. In all cases the fan will definitely be able to provide stable and reliable performance.

In addition, if SY1225DB12M is set to operate at full speed it is a bit noisy but when it is set to be automatically powered and regulated it maintains a decent to low noise level while providing stable airflow to keep the hardware cool and quiet.

2. Scythe Slip Stream 120 DB SY1225DB12M Appearance:

Regarding the appearance, I should say that Scythe Slip Stream 120 DB SY1225DB12M is designed to be a very simple and at the same time pretty stylish looking fan, which will definitely look amazing and totally neutral in a case with black/grey colour scheme. Also it could be a great cooling unit and good addition to a modding project in the black/grey colour range.

I think that Scythe Slip Stream 120 DB SY1225DB12M deserves the following reward:


Scythe Slip Stream 120 DB SY1225DB12M has been added to the 120mm fans catalogue.

Official price (MSRP): Scythe Slip Stream 120 DB SY1225DB12M – 7.5 euro w/o VAT

Warranty: 24 months

I thank Scythe for the provided test sample.



Scythe Slip Stream 120 DB SY1225DB12M – Test and Review
8.9 Total Score

Noise Level
Additional accessories
User Rating: 4.21 (12 votes)

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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