So far I was able to test and review various 120 and 140mm models from the Venturi and Silent Series 3 and now I have the chance to test and review GP12 and GP14, which are part of the Fractal Design’s Dynamic GP, which is actually the third and the most balanced series in the company portfolio.
To perform this test and review I received both GP12 and GP14, which arrived to me inside pretty stylish carton packages featuring the typical for the company black and white colour scheme with a picture of the fans accompanied by some basic details regarding the rated revolutions per minute, the company logo and last but not least the model name on the front black panel of the box.
|Dynamic GP12||Dynamic GP14|
As every other model from the company portfolio, the full technical specifications, additional pictures of the fans and some of the basic features related with these products are located on the back side of the black carton boxes.
And since the main focus of this review are actually the fans let’s put the packages aside and proceed with checking their structures.
Fractal Design Dynamic GP12 and GP14 STRUCTURE
By seeing the fans for first time, I noticed that they are in the typical Fractal Design signature, which features black and white color scheme. Apart from that, these models are offered entirely in black with black frames and propellers. Of course, the two samples, which I got are with almost identical structure and the only difference are the dimensions and of course the corresponding cooling performance, which the fans are able to deliver.
So, let’s proceed with checking the design and structure of the fans…
|Dynamic GP12 front view||Dynamic GP14 front view|
Both of the models are designed and equipped with a very rigid entirely in black matte plastic square frames with physical dimensions of 120 x 25 for the Dynamic GP12 model and 140 x 25mm for the Dynamic GP14 model.
The frames themselves are not equipped with any vibration dampening materials and offer 4 mounting holes on each side to be used when installing the fans using screws or rubber dampers on a 120mm (105 x 105mm screw hole pattern) or 140mm (125 x 125mm screw hole pattern) case fan slots or on a CPU cooler heat sink.
|Dynamic GP12 back view||Dynamic GP14 back view|
Also the frames are equipped with aerodynamically shaped thin stator struts, which are copying the design commonly found on airplane wings, delivering correct angles allowing for air to easily pass through to achieve reducing the noise and unwanted turbulence. Additionally, the stator struts are angled perpendicular to the blades, helping to reduce the noise, which is commonly emitted when the blades pass the struts. In effect, minimal noise that may be emitted will be constant and therefore almost inaudible to the ear.
And by mentioning the blades, both GP12 and GP14 are designed with almost the same entirely in white propellers which offer 7 pretty wide and not very sharply angled blades. Both of the propellers are designed with strategically placed notches near the fan stator on the trailing edge of the blades for further reducing and diffusing humming noise produced when the blades pass the stator struts. And to further improve the efficiency and quiet operation of the fans the propellers include a “trip wire” on the rear side of the blades, near the leading edge. The trip wire technology is also commonly found in airplane wing designs and introduces a micro-turbulent layer that helps to fight the elements that negatively affect performance.
The connection between the frames and the propellers for both of the fans is done via 3-pin powered and regulated hydraulic bearings equipped with additional counter-balancing magnet in the hub that reduces the axial tension on the bearing, further protecting the long life of the bearing, which are calculated to deliver life span of up to 40,000 hours of constant operation.
With these motors and propellers the fans are able to:
- GP12 is made to operate at maximum 1200 revolutions per minute, delivering airflow level of 52.3 CFM, static pressure level of 0.88 mm H2O at noise level of 19.4dBA.
- GP14 is built to operate at maximum 1000 revolutions per minute, providing airflow level of 68.4 CFM, static pressure level of 0.71 mm H2O at noise level of 18.9dBA.
Both of the fans are made to be powered and regulated via 500mm long black ribbon 3-pin cables and connectors.
Fractal Design Dynamic GP12 and GP14 ADDITIONAL ACCESSORIES
|Dynamic GP12 accessories||Dynamic GP14 accessories|
Both fans were provided to me again with absolutely identical accessories pack which includes only one set of 4 metal installation screws to attach the fans to the case fan slot. Of course, they are also in black.
Since I am done with checking the fans I believe it is time to check their actual performance.
Fractal Design Dynamic GP12 and GP14 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 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 GP12 made at least one stable revolution per minute at about 4.5V, while GP14 started rotating at 4V. To perform all of the tests I had to increase the operational voltage to 5V.
Test at 5V:
At the first test, conducted at 5V sharp, GP12 was rotating at stable 630 revolutions per minute and providing airflow level of 34.08 cubic metres per hour, while GP14 was providing airflow level of 36.96 cubic metres per hour at only 480 revolutions per minute. At this test both of the fans were absolutely quiet.
Test at 7V:
At the second test, performed at exactly 7V, GP12 was rotating at 855 revolutions per minute, providing airflow level of 51.36 cubic metres per hour, while GP14 was rotating at 675 revolutions per minute with airflow level of 53.28 cubic metres per hour. At this test both of the fans remained silent.
Test at 9V:
At the third test conducted at 9V, GP12 was providing airflow level of 67.2 cubic metres per hour while rotating at 1125 revolutions per minute, while for the GP14 the airflow level was 62.88 cubic metres per hour, while rotating at 825 revolutions per minute. At the third test both GP12 and GP14 remained quiet.
Test at 12V:
At the last test conducted at 12V, both fans delivered their maximum performance, which for GP12 was airflow level of 89.28 cubic metres per hour at 1380 revolutions per minute, while for GP14 it was 94.08 cubic metres per hour, while rotating at 1020 revolutions per minute. At this test, GP12 started generating a noise coming out of the air passing through the propeller, while GP14 remained quiet.
Fractal Design Dynamic GP12 and GP14 CONCLUSIONS
1. Fractal Design Dynamic GP12 and GP14 Performance:
According to Fractal Design, the models from the Dynamic series are ideal for any usage scenario and by spending about 2-3 hours having fun with the models from the Dynamic series I have to say I had some quality time and with the achieved results and I can confirm the company’s statement.
Both of the fans are actually pretty decent models, made with several advanced technologies to provide quality and stable airflow to deliver reliable cooling performance while maintaining low noise level. Throughout the tests both of them performed pretty well and achieved solid results, which made me think that indeed both of the fans will be a good choice to be installed on a case fan slot to boost the overall airflow inside every modern case.
Apart from that, I believe they will be capable to work as main cooling units installed on higher fins gap CPU heat sinks compatible with 120mm and 140mm fans and keep low or middle grade processors running cool and stable at default or just a little bit overclocked frequencies. For achieving overclock results the fans might not be the best choice since the static pressure level is average but for this there are many other models, which will handle the job.
2. Fractal Design Dynamic GP12 and GP14 Appearance:
And here again we have the typical Fractal Design’s signature black and white color scheme, which adds a stylish presence and which I find very attractive and it will definitely be a great addition to cases or modding projects in black and white colour scheme.
I think both of Fractal Design Dynamic GP12 and GP14 models deserve the following award:
Fractal Design Dynamic GP12 has been added to the 120mm fans catalogue.
Fractal Design Dynamic GP14 has been added to the 140mm fans catalogue.
Official price (MSRP): Fractal Design Dynamic GP12: 10.99 euro
Official price (MSRP): Fractal Design Dynamic GP14: 12.99 euro
Warranty: 36 months
Special thanks to Fractal Design for providing us with test samples.