Cool Age Silence Fan 120DX2
The product packaging is pretty and original: there is a cutout in the shape of a bear in its front so you can have a look at the fan without opening it.
Included with the fan are a small sticker with the same bear and four short silicone pins for installing the fan.
The Silence Fan 120DX2 is manufactured in China and has a recommended price of $9.9. Its warranty period is 1 year.
This fan looks pretty. Its transparent frame creates the impression that the dark-blue impeller is just hanging in the air.
However, it is actually fastened to four spokes, three of which are 5 millimeters wide and the cable one is 8 millimeters wide. The impeller is 112 millimeters in diameter while the rotor is 40 millimeters. The weight of the fan is not specified, but it seems to be very light.
The 7-blade impeller does not feature any innovations except that the plastic of both the impeller and frame is somewhat rough rather than smooth as usual.
The rotation speed of the fan is specified to be 1200 RPM. Working at such a speed, the fan is expected to produce an air flow of 62 CFM and no more than 17 dBA of noise. The latter number looks rather implausible to me. The sticker on the rotor bears the manufacturer’s name and tells you some of the fan specs.
Below the sticker there is a dual ball bearing (with a rated service life of 60,000 hours) and an electromotor. According to the specifications, the Silence Fan 120DX2 needs no more than 3.96 watts of power but my measurements suggest that its peak power draw is 1.2 watts. Its start-up voltage is rather high at 7.7 volts. The fan’s 3-wire cable is 395 millimeters long.
Here are the test results:
The Cool Age Silence Fan 120DX2 is better than the two Arctic Cooling products in terms of noisiness. The sound of its working is not uncomfortable even at the maximum speed. The fan remains quiet until 910 RPM, which is a very good result in this test session. The Silence Fan 120DX2 also features a strong air flow which depends linearly on the impeller’s speed.