With the line of Special NNV, Nanoxia plans to minimize vibration as much as possible. To this end, the manufacturer has borrowed technology from the automotive industry. Nanoxia even promises “the first vibration-free PC fan in the world” – the first fan in the world without vibration. Our Nanoxia Special NNV Fan 120 PWM with PWM / PWM control was introduced into our test lab, so it will be interesting to see the test results.
In the world there are several companies specializing in quiet computers. Nanoxia also refers to them, in our test lab has already been quiet Nanoxia cases and fans. However, the previously tested Nanoxia fans belonged to the usual ruler with a square frame. And for the vibration isolation rubber covers were provided.
In the case of Nanoxia Special NNV Fan 120 PWM, everything is different. The fans consist of two round frames, isolated from each other. The outer frame is used to mount the fan into the housing, the inner frame contains the impeller and motor. The frames are isolated from each other by four rubber dampers. This patented technology was taken from the automotive industry, where comparable fans are used for a heated seat system.
Nanoxia will offer Special NNV Fan in different versions. First, the market will be released Nanoxia Special NNV Fan 120 PWM, which we just tested. The fan speed changes from 400 to 1.650 rpm via the PWM signal. Three 120mm models with a 3-pin connection for 800, 1.200 and 2.000 rpm will follow. Nanoxia asks for fans 21.99 euros, regardless of option.
We received a preliminary sample without packaging. Unless four plastic mounting pins were attached to the fan. Despite the unusual design with two ring frames, the Nanoxia Special NNV Fan fans are installed in standard 120mm mounts. However, the round frame is unlikely to please users of the NWS, since it does not cover the area around the impeller, through which the air can safely leave. It will be interesting to see if we get a deviation in our tests in the wind tunnel.
If you look closely, you can see rubber dampers between the two ring frames, which ensure mutual vibration isolation of the frames. Both rubber dampers and impeller are painted in the company green Nanoxia. It fits well with the light gray frames. There is no LED backlight.
Behind the fan, made in Taiwan, the two frames are closer to each other in the cross region than in the front. Here the manufacturer used rubber gaskets, so that the frames do not touch. Nanoxia chose a hydrodynamic bearing for the fan.
The fan is connected with a braided cable with a length of almost 45 cm. As you might expect from a PWM-controlled model, the connection is made using a 4-pin PWM plug.
The maximum air flow depends on the fan format and the speed of rotation. Fans Nanoxia Special NNV Fan 120 PWM have not only a small format of 120 mm, but the speed of the PWM version is limited to 1.650 rpm – a very moderate level. With 120mm reference fans, the speed is not as limited. Corsair accelerated the ML120 PRO fans to an extreme level of 2.400 rpm, the SilentWings 3 120mm PWM fans spin up to a maximum of 2,200 rpm. In the case of Noctua NF-F12 PWM fans, the speed is limited to 1,500 rpm, they can just be used for comparison with the new Nanoxia. A small advantage of Nanoxia Special NNV Fan 120 PWM did not show itself by speed.
It is clear that the two fans have different characteristics. Without obstacles and with a ventilation grate, two fans produced almost identical results. The Noctua fan is better able to handle the dust filter and heat exchanger, and the Nanoxia fan gives a larger airflow with an air cooler heatsink where the distance between the fins is greater than that of the heat exchanger. The fact that the NF-F12 PWM fan shows itself better with more significant obstacles can be explained by the fan’s characteristic of static pressure. The NF-F12 PWM provides a maximum pressure of 2.61 mm H₂O, while in the PWM version of the Nanoxia Special NNV Fan 120 PWM we get only 1.38 mm H₂O.
At the same speed of 1,000 rpm, the air flow of Nanoxia Special NNV Fan 120 – PWM decreases more significantly than the Noctua fan. All other reference fans also showed a higher airflow. We were not able to carry out measurements with serious obstacles due to insufficient air flow.
As you might expect, Nanoxia Special NNV Fan 120 PWM works much quieter than high-speed competitors. Interestingly, the noise level at the maximum speed is even less than that of the Noctua NF-F12 PWM, although the latter rotates at a lower speed.However, the Nanoxia fan at maximum speed can not be called quiet, because it gives a noticeable airflow noise.
We also conducted noise level tests at the same speed of 1,000 rpm. Here, 120 mm fans were tested in all scenarios, including those where we could not measure the air speed.
At the same speed, we got very interesting results. Nanoxia Special NNV Fan 120 PWM no longer remains the absolute leader in all test scenarios, but still it can be called one of the quietest fans in our tests. Subjectively, the noise level is noticeable only in an open test bench. Nanoxia also left room for maneuver, although we could not reach the declared minimum speed of 400 rpm. Using the utility ASUS Fan Xpert 3, the fan managed to slow down only to 700 rpm.
Fans Nanoxia Special NNV Fan stand out among other models, and not at all bright LED-backlight. It’s all in the double frame, which provides additional vibration isolation. Outwardly, the fans are pleased with the beautiful combination of gray and green colors. As for the double round frame, it is difficult to unequivocally call it better or worse than other solutions, for example, time-tested rubber corners. At least in our many tests, we did not notice any noise from the vibration.
In general, the PWM-version of Nanoxia Special NNV Fan is a rather quiet 120-mm fan. Especially it concerns tests at the maximum speed. Here the fan wins from a moderate maximum speed and a 120-mm format. In tests for 1.000 rpm, we got one of the quietest fans in the test lab. On our system, we were able to reduce the speed of the PWM fan to 700 rpm, which is slightly higher than the promised speed of 400 rpm. At our minimum speed of 700 rpm, the fan worked very quietly, the noise of the air flow was barely noticeable.
However, fans are unlikely to expect a significant airflow in the event of serious obstacles. For the maximum level of cooling performance paired with heat exchangers and radiators, it is better to choose a more suitable model. In addition, the market has fans with a large margin for speed. This applies, for example, to the reference Corsair ML120 Pro and be quiet! SilentWings 3 120mm PWM High-Speed . Both fans are available for sale at a price less than 20 euros.
Fan Nanoxia Special NNV Fan 120 PWM will be interesting, first of all, as a quiet fan for the case. But still the price seems too high to us, because there are less expensive, but no less worthy competitors in the market.