Scythe Kama Flow 2 SP1225FDB12H Test and Review

So what is Kama Flow 2 series?

Scythe Kama Flow 2 series offers fans with three different sizes including 120, 92 and 80 mm separated in 3 three diverse performance classes. Since I am not working with models smaller than 120mm, I will pay attention only to the biggest models in the Scythe Kama Flow 2 120mm series. Scythe Kama Flow 2 models are made to provide very nice airflow level, while operating at low to high range revolutions per minute with guaranteeing a long lasting life up to 120 000 hours constant operation guaranteed by the Ex-FDB (Extra Fluid Dynamic Bearing).

The 120mm series offers three models with these technical details:

  1. Scythe Kama Flow 2 SP1225FDB12L – working at 900 rpm providing airflow level of 52m³/h with noise level of 11dBA.
  2. Scythe Kama Flow 2 SP1225FDB12M – working at 1400 rpm providing airflow level of 81m³/h with noise level of 27.6dBA.
  3. Scythe Kama Flow 2 SP1225FDB12H – working at 1900 rpm providing airflow level of 107m³/h with noise level of 33.8dBA.

For this test and review I got the fastest model, so let’s check out how it will perform.


Scythe Kama Flow 2 SP1225FDB12H arrived to me in the pretty standard for the company package, again made as a transparent plastic box through which we can see the full fan structure and a carton cover hiding the additional accessories provided with the fan. Of course, on the front side of the carton cover there are the main technical details regarding the product, while the full technical specification, 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.


So far so good. The fan looks pretty simple and at the same time promising, so let’s check out its structure and features.

As every other fan on the market, Scythe Kama Flow 2 SP1225FDB12H  is made of three components:

  1. The frame of the fan
  2. The propeller
  3. The bearing


Scythe Kama Flow 2 SP1225FDB12H is made of a pretty standard, very robust looking square frame, completely painted in black matte colour, with dimensions of 120 x 120 x 25mm and overall weight of 169 grams meant to be installed on a 120mm case fan slot or CPU cooler with standard 120mm holes using 4 metal screws or 4 rubber dumpers, or 2 CPU cooler clips. The frame itself holds a pretty big motor made with the Ex-FDB (Extra Fluid Dynamic) bearing to provide a better lubrication of the rotating rotor for much longer operation time while working at lower noise level.


After I checked the frame structure and the bearing I believe it is about time to check the propeller structure itself.

Scythe Kama Flow 2 SP1225FDB12H features a pretty standard, again completely painted in black matte, propeller made of 7 not very wide but with very sharp angled blades, definitely made to provide a high airflow level and probably average to high static pressure level. With this propeller design I expect the fan to work at very wide noise level range while operating at 5, 7, 9 or 12V.

The fan is  powered and regulated by a not very long 3- pin, non-sleeved in mesh cable and connector.


Now let’s check out the additional accessories provided with the Scythe Kama Flow 2 SP1225FDB12H.

The standard package for this product features:

  1. 4 metal screws
  2. 3-Pin to 4-Pin Molex Adapter

I believe it is time to do some testing.

The tests will be conducted in my standard way. I will mount the fan and test it at 5V/7V/9V/12V and my goal will be to check the performance of the fan in real conditions. The product 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 fan is mounted on a cooler or on the case fan hole 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

Scythe Kama Flow 2 SP1225FDB12H A

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

Scythe Kama Flow 2 SP1225FDB12H R

The anemometer showed the following air speed:

Scythe Kama Flow 2 SP1225FDB12H S

After mounting the fan onto the stand, and leaving it to run for about 30 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 Scythe Kama Flow 2 SP1225FDB12H made at least one full revolution at about 3.5V. To conduct the first test I had to increase the voltage up to 5V.

Test at 5V:

At the first test, conducted at 5V, Scythe Kama Flow 2 SP1225FDB12H was rotating in a stable manner at 870 revolution per minute with airflow level of 51.36 cubic metres per hour. At this test the fan was completely silent.

Test at 7V:

The second test, conducted at 7V made the fan rotate at exactly 1200 revolutions per minute and providing airflow level of 70.04 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 9V:

At the third test, conducted at 9V the fan reached up to stable 1500 revolutions per minute with airflow level of 90.24 cubic metres per hour, which was a very nice performance boost. The noise coming out of the air passing through the propeller increased.

Test at 12V:

The last test done at 12V made the fan reach its maximum performance with airflow level of 113.76 cubic metres per hour, which was a bit higher than officially rated and rotating at 1860 revolutions per minute. The noise level increased a lot.


After I am done testing, it will be nice to share my conclusions:

Scythe Kama Flow 2 SP1225FDB12H Performance:

After I spent some time reviewing and later testing the fan all I can say is good job, Scythe! Scythe Kama Flow 2 SP1225FDB12H offers a pretty good balance between airflow level and low to average noise level, while operating at very wide revolutions per minute range.

I believe this model can work very well when installed on a 120mm case fan slot and when installed on a CPU cooler for cooling a processor working at default or a bit overclocked frequencies. Apart from that, when the fan is working at 5V and 7V it was pretty quiet and got a bit loud while working at 9V and 12V.

Even though it got a bit loud when working at maximum speed, this model offers a wide range of performance to keep every modern build working cool at every possible ambient temperature. Of course, it will get very quiet during cold days and very loud during warm days.

Scythe Kama Flow 2 SP1225FDB12H  appearance:

The fan itself offers a very clean and simple design painted completely in black matte colour made to stay neutral when installed inside every modern case with a 120mm case fan slot or when installed on a CPU cooler. In both cases it will not take part in the overall build appearance with adding inappropriate colours inside the case.

As disadvantage I can mention the lack of PWM control and of sleeve on the power and regulating cable, which could improve the overall performance and appearance of the product.


I think Scythe Kama Flow 2 SP1225FDB12H  deserves the following reward:


Scythe Kama Flow 2 SP1225FDB12H has been added to the 120mm fans catalogue.

Official price (MSRP) for Scythe Kama Flow 2 SP1225FDB12H: unknown

Official warranty: 24 months

I thank Scythe for the test sample.




Scythe Kama Flow 2 SP1225FDB12H Test and Review
8.2 Total Score
Very good performance/ noise level balance

Noise level
Additional accessories
User Rating: 4.67 (5 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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