Both Reeven Coldwing 120mm Silent and 120mm Silent-Perf. with PWM arrived in absolutely the same carton boxes with a see through plastic cut, through which you can see the fan structure, and a carton part covering the accessories as the Reeven Coldwing 120mm Perf. and 120mm Performance PWM.
Of course there are some minor differences – the technical details. If you remember the first models I’ve tested were rated with 2000 rpm and huge airflow, while Reeven Coldwing 120mm Silent (RM1225S08B) is meant to work as a case fan and Reeven Coldwing 120mm Silent-Performance with PWM (RM1225S15B-P) is the most balanced model.
After I took both fans out of the box I realised their structure is absolutely the same like the one of the other fans I’ve tested before. So far I saw 4 models with the same structure but with different perfromance. Both fans are made of painted in black plastic frame and a propeller with 11 blades painted in yellow and again, like the other models, both fans are powered and regulated by a 3pin power connector sleeved in black.
Reeven Coldwing 120mm Silent
And seen from the back:
Let’s check out the other model…
Reeven Coldwing 120mm Silent-Performance with PWM
Apart from the same appearance these two models offer absolutely the same package content:
Reeven Coldwing 120mm Silent and 120mm Silent-Performance with PWM come with absolutely the same following accessories:
- Four metal screws
- 4-to-3 Pin power adaptor with additional 1 pin connector to be attached to the motherboard tachometer
- A Reeven company advertising sticker
The tests will be conducted in my standard way. I will mount the samples and test both of them at 5V/7V/9V/12V and my goal will be to check the authenticity of the technical characteristics given by the manufacturer. The products 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 fans 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.
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 airflow levels at 5V, 7V, 9V, 12V:
After mounting the fans to the stand and leaving them to run for about 30 minutes at maximum speed, it was time for the tests to begin.
As with my all other tests, again I started with a gradual increase of the voltage through the Lamptron FCT starting at 0V and the Reeven Coldwing 120mm Silent (RM1225S08B) made one full revolution at 6.6V, while the Reeven Coldwing 120mm Silent-Performance with PWM (RM1225S15B-P) made its full revolution at 6.4V. In order to conduct the first test I had again to decrease the voltage to 5V of both of the fans.
Test at 5V:
The tests started with reducing the starting voltage to 5V and measuring the fan speed and the airflow. The first model – Reeven Coldwing 120mm Silent reached 390 revolutions per minute and airflow of 31.68 cubic metres per hour, while the second – Reeven Coldwing 120mm Silent-Performance with PWM reached 43.02 cubic metres per hour at 540 revolutions per minute. Both of the fans were absolutely quiet.
Test at 7V:
At the second test Reeven Coldwing 120mm Silent reached 525 revolutions per minute and airflow of 46.08 cubic metres per hour and 78.72 cubic metres per hour at 870 revolutions per minute for the second model – Reeven Coldwing 120mm Silent-Performance with PWM. Again there wasn’t any noise from both of the fans.
Test at 9V:
The third test at 9V made the Silent version to work at 660 rpm and airflow of 60.48 cubic metres per hour and 108.96 cubic metres per hour at 1155 rpm for Silent-Performance with PWM version. At this test first model was still silent while from the second model there was a tiny noise of the airflow passing through the propeller.
Test at 12V:
The last test at 12V made me realize that I just tested one more powerful fan – Reeven Coldwing 120mm Silent-Performance with PWM working at 1515 rpm with airflow of 148.32 cubic metres per hour, while Reeven Coldwing 120mm Silent reached airflow level of 77.76 cubic metres per hour and only 810 rpm. The PWM version became even noisier but still at a small distance, while the other model was again silent.
Seems it is time for me to give my personal opinion.
- Performance: Even though both of the fans looks almost the same they give totally different performance. And the overall picture is that I had the chance to test 4 different models with almost the same structure working in totally different manners. Reeven Coldwing 120mm Silent – made for improving the case airflow, Reeven Coldwing 120mm Perf. and 120mm Performance PWM – made for cooling the CPU coolers and the last model Reeven Coldwing 120mm Silent-Performance with PWM – to be the balanced link between all of the models.
- Noise level: Reeven Coldwing 120mm Silent is meant to improve the case airflow and for that reason was extremely silent during all of the tests, while the second model was quiet at low rpm and a bit noisier at higher rpm. To be honest I had never seen so far a fan working at 1500 rpm and to be so quiet.
- Vision: There is nothing much to say for these models since all of the Reeven Coldwing series look almost the same. The black/yellow colour scheme is just great.
There is only one disadvantage I could mention about both of the fans.
- Lack of rubber screws, which could reduce the noise a bit and kill possible vibrations that may pop up after some months of work.
And as I said before, I believe that Reeven Coldwing 120mm Silent is meant for mounting on the case holes and improving the case airflow, while Reeven Coldwing 120mm Silent-Performance with PWM can be mounted as a case or a CPU cooler fan too. I believe it can handle both very well.
I think that Reeven Coldwing 120mm Silent deserves the following reward:
and for Reeven Coldwing 120mm Silent-Performance with PWM
Both fans have been added to the 120mm fans catalogue.
I thank Reeven for the samples!