SPCR's Fan Round-Up #3: 92mm Fans

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COOLINK X9 SERIES

Ambient noise at the time of testing was 19 dBA.

Fast Version: X9-1900
Brand Coolink Power Rating 0.10A
Manufacturer Kolink Airflow Rating 40.2 CFM
Model Number X9-1900 RPM Rating 1,900 RPM
Retail Availability Yes Noise Rating 23 dBA
Bearing Type Dual Ball Bearing Header Type 3-pin
Hub Size 1.27" Starting Voltage 3.1V
Frame Size 92 x 92 x 25 mm Number of Samples 2
Our thanks to Coolink for supplying these samples.
Voltage
Noise
RPM
CFM
Power
12V
30 dBA@1m
2010 RPM
45 CFM
0.93W
9V
24 dBA@1m
1580 RPM
34 CFM
0.72W
7V
21 dBA@1m
1230 RPM
27 CFM
0.61W
5V
~20 dBA@1m
900 RPM
18 CFM
0.48W
@15 CFM (4.4V)
~19 dBA@1m
790 RPM
15 CFM
0.44W
May 5, 2008
The updated airflow results here are the result of improvements in our testing procedures. They are more accurate than the original results above, but they are not directly comparable. Please compare these only with fan reviews published after May 5, 2008 — or ones that have updated results published in a box like this one.
12V
30 dBA@1m
2010 RPM
29 CFM
0.93W
9V
24 dBA@1m
1580 RPM
22 CFM
0.72W
7V
21 dBA@1m
1230 RPM
18 CFM
0.61W
5V
~20 dBA@1m
900 RPM
13 CFM
0.48W
@15 CFM (5.8V)
20 dBA@1m
1040 RPM
15 CFM
0.55W

Regular readers may remember these Coolink fans from our review of the Nocuta NH-U9 / Coolink U8-92-1900 heatsink. For the most part, they didn't impress, but we did give the 1,100 RPM version special mention for being so quiet at the stock 12V. Our assessment now hasn't changed: If you're looking for a reasonably quiet fan and you refuse to use any form of fan control, the X9-1100 might be worth a look. If that's not your situation, find something else.

The green-fins-in-a-clear-frame may look cool, but they're definitely not good for noise. The X9 series suffers from the same problem as the Acoustifan: The frame is brittle and highly resonant. The result is a noise character that is louder and harsher than it would be otherwise. And, unlike the Acoustifan, the X9 series has a nasty buzz that is amplified by the resonance.

Things do not improve with undervolting. As the speed drops, the buzz and resonance drop away, only to be replaced by a sharp, scratchy hissing, which prevents the X9's from ever becoming inaudible. This might be acceptable for a while if there are other undamped sources of noise in the system, but any serious silencer will find themselves frustrated with these fans.

The high speed X9-1900 is also available as the VS9-1900, which bundles a variable fan controller with the same basic fan. It's a nice package, with a nickel-plated PCI slot cover and a brushed aluminum knob, but, unfortunately, the range of adjustment is 6.4~11.3V — just barely low enough to match the stock 1,100 RPM speed of the X9-1100. That's not low enough for a model with a fan controller.

The best thing that can be said about the X9 Series is that they have double ball bearings, which should make them more durable under hot conditions. Since every other fan in this round-up uses sleeve bearings, this is worth pointing out. However, with such a poor noise signature, we are not about to recommend them on the basis of their bearings. Presumably, there are other, quiter fans out there that use double ball bearings; we hope to look at some in future reviews.


The fan controller is slick, but that isn't quite enough to save a noisy fan...

Medium Version: X9-1500
Brand Coolink Power Rating 0.10A
Manufacturer Kolink Airflow Rating 31.7 CFM
Model Number X9-1500 RPM Rating 1,500 RPM
Retail Availability Yes Noise Rating 19 dBA
Bearing Type Dual Ball Bearing Header Type 3-pin
Hub Size 1.27" Starting Voltage 3.4V
Frame Size 92 x 92 x 25 mm Number of Samples 1
Voltage
Noise
RPM
CFM
Power
12V
24 dBA@1m
1540 RPM
34 CFM
0.60W
9V
20 dBA@1m
1200 RPM
26 CFM
0.49W
7V
~20 dBA@1m
930 RPM
19 CFM
0.43W
5V
<19 dBA@1m
650 RPM
12 CFM
0.36W
@15 CFM (6.0V)
~19 dBA@1m
790 RPM
15 CFM
0.39W
May 5, 2008
The updated airflow results here are the result of improvements in our testing procedures. They are more accurate than the original results above, but they are not directly comparable. Please compare these only with fan reviews published after May 5, 2008 — or ones that have updated results published in a box like this one.
12V
24 dBA@1m
1540 RPM
21 CFM
0.60W
9V
20 dBA@1m
1200 RPM
17 CFM
0.49W
7V
~20 dBA@1m
930 RPM
13 CFM
0.43W
5V
<19 dBA@1m
650 RPM
8 CFM
0.36W
@15 CFM (8.1V)
20 dBA@1m
1050 RPM
15 CFM
0.46W

Slow Version: X9-1100
Brand Coolink Power Rating 0.10A
Manufacturer Kolink Airflow Rating 23.3 CFM
Model Number X9-1100 RPM Rating 1,100 RPM
Retail Availability Yes Noise Rating 14 dBA
Bearing Type Dual Ball Bearing Header Type 3-pin
Hub Size 1.27" Starting Voltage 6.2V
Frame Size 92 x 92 x 25 mm Number of Samples 1
Voltage
Noise
RPM
CFM
Power
12V
20 dBA@1m
1140 RPM
24 CFM
0.46W
9V
~19 dBA@1m
870 RPM
18 CFM
0.39W
7V
<19 dBA@1m
670 RPM
12 CFM
0.35W
5V
<19 dBA@1m
430 RPM
6 CFM
0.31W
@15 CFM (8.1V)
~19 dBA@1m
790 RPM
15 CFM
0.37W
May 5, 2008
The updated airflow results here are the result of improvements in our testing procedures. They are more accurate than the original results above, but they are not directly comparable. Please compare these only with fan reviews published after May 5, 2008 — or ones that have updated results published in a box like this one.
12V
20 dBA@1m
1140 RPM
17 CFM
0.46W
9V
~19 dBA@1m
870 RPM
11 CFM
0.39W
7V
<19 dBA@1m
670 RPM
9 CFM
0.35W
5V
<19 dBA@1m
430 RPM
4 CFM
0.31W
@15 CFM (11.3V)
20 dBA@1m
1060 RPM
15 CFM
0.42W

Noise Recordings

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