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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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