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XILENCE PWM

The next fan we are going to introduce to you comes from XILENCE Company. The fan comes in a very simple box made of clear plastic with a molded section for the fan and accessories covered with a cardboard insert:

 

The back of the package lists the fan technical specifications in eight different languages. The fan is made in China and there is no mention of its recommended retail price or manufacturer warranty. The fan comes bundled with only four self-tapping screws that will secure it once and for all in the system case panel.

Unlike all other fans we have already talked about today, XILENCE claims no high-tech innovations or know-how of any kind were used for designing their solution. There is no description of the bearing structure, fan blades shape, or any other unique distinguishing features. The fan measures 120x120x25 mm and weighs 175 g. It has 7 blades and a rotor with 48 mm diameter:

The blades are unusually wide, I would even say they are the widest blades of all fans reviewed today. Bright red fan color poses good contrast to the black frame, which makes XILENCE PWM solution look quite attractive:

 

There is no sticker with information on the fan spindle, and the one on the fan itself has minimum info on it. Its rotation speed is PWM controlled with the maximum at 1500 RPM. The manufacturer indicated no minimum speed for their solution. At maximum rotation speed, XILENCE PWM creates 57.9 CFM airflow and generated 21.2 dBA of noise, which must be claimed lower than it actually is. No mention of the static pressure, either.

The fan uses a fluid dynamic bearing with unknown MTBF. At 0.09 A current the declared power consumption should be 1.08 W. The fan has a pretty short 290 mm cable, which is definitely not enough.

Unfortunately, XILENCE PWM turned out to be the worst fan in our today’s test session:

Everything seems to be fine with the XILENCE PWM graph: the airflow is normal, the power consumption is low enough, and the noise curve doesn’t grow too aggressively… However, all this was ruined by unpleasant loud crackling of the bearing that also doesn’t crackle evenly, but changes the tone of it gradually. Overall, I can only recommend this fan for those systems where background noise is already high enough and will drown the crackling of the fan bearing. The fan starts at 6 V. Speaking of acoustical comfort, well, if we can speak about any acoustical comfort at all here, this fan is bearable only at 720 RPM.

 
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