Demonstration and test of 35 fans
Details of our test participants
COLLECTION
Three of the solutions marked with the name KOLINK came. Two of these are 80 and one is 120 millimeters. Looking at the data sheet of the eighties, a strange thing strikes us right away, even though the slower pace delivers more air, yet the noise is the same. What’s worse about the slower version is the power consumption, but that’s why we don’t have to cry, since there’s no big difference between 0,9 and 0,8 amps, given a maximum percentage.
When we opened the boxes, it immediately becomes apparent that we got two completely different products here, the only match being the size. A faster valve has a larger engine size and therefore smaller blades, which immediately explains why the air delivery value is lower. Due to the size of the motor, after a little research, it turned out that the larger motor is a ball-bearing version, while the smaller one has a plain bearing design. In this way, however, we can immediately understand the difference in current consumption.
Before turning to the post-power-on experience, there is no harm in a brief introduction, which will be true not only for KOLINK but also for other products. In the article we will read ones that are loud, buzzing loudly, buzzing loudly, rattling, squeaking. These markers, signaling structures, will not suggest that we were sitting next to an aircraft turbine. The magnitude of the indicated noises is only a matter of comparison: we compare the fans to each other; fortunately, even in the case of the loudest piece, we can’t complain about the fact that the air-chasing noise hurts our ears even from a meter away.
Then, after the little detour, let's see what we experienced with the two 8-centimeter KOLINK! Although the plain bearing piece was quieter, we can’t call it quiet at all. Of course, in the case of a ball-rattling sound, we don’t hear a rattling sound, as in the case of a ball bearing, but the sound of a glide, but it’s loud enough. Interestingly, the ball version resonates less despite the fact that we would expect the exact opposite based on the sounds coming from inside. These fans did not make a good impression on us. The magnitude of the wind noise is understandable, as at a relatively high speed, the 8-centimeter size gives a reason for this, but there can be no excuse for the sound of the engines. The only positive may be the price, or for servers - where noise is not a significant consideration - the ball bearing solution is expected to have a longer life.
The 12-centimeter version also has a ball bearing, so it has all the advantages and disadvantages of the solution. The rattling sound can be heard here as well, and due to the larger blade size, the wind noise does not suppress it either. Compared to the sound, the vibration is minimal here as well, which is unfortunately noticeable, but we shouldn't be surprised by the bearing.
In summary, the fans can be said to have average power, current consumption and air delivery. With a really good heart, we can't offer the plain bearing version anywhere, but the ball bearing solutions may be suitable for machines where noise is not an essential consideration due to the expected longer service life and the effective low price, but the wallet does not allow high-end, large procurement of air vignettes stickered with names.
Chieftec
Chieftect also received three fans. One 8, one 9 and one 12 centimeters. These propellers are also from the cheaper series, so we don’t feed bloody hopes about quality, but we anticipate confidence and hope we’re wrong.
We can't find a single letter about the technical data on the packaging, so we tried to search the net for what they know. According to the manufacturer's side, all three specimens have plain bearings, so we can already see that the letter S at the end of the names indicates this, if it were B, it would be spherical. The technical data show nothing interesting, all their properties, air transmission, noise and current consumption can be said to be average. Let's listen to them!
The fans were a positive disappointment compared to the COLINK type. We wouldn’t dare call them quiet, there’s a much smaller and less disturbing pitch sound coming from the engine. The eight inches sounds a little higher, the nine deeper. The latter is less confusing. The 12-centimeter piece, on the other hand, is quite quiet, almost silent. There’s some little chirping from here too, so there’s no question of noise reduction, but it’s still good. The wind noise is not dangerous either, we can by no means say it is unpleasant. Compared to the COLINK, the speed according to the factory data is higher, but the noise and air delivery are lower. In conclusion, this brand is already more highly recommended for purchase for home use.
