-- Zalman Heatsink Round Up
-- 7.31.2001
-- By: winterstick
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Zalman Tech is the worlds first company to produce
functional heatsinks and computer equipment at a noise level of 20
dB or lower. While other companies have gone with bigger and louder
HSF. Zalman took a different approach to the problem, instead of
mounting a relatively small heatsink to a very loud and high CFM
fan, Zalman worked on ways to triple the surface area of other
heatsinks, which allows for excellent cooling and a low noise
environment. Today we will be looking at three of the Zalman
coolers, the CNPS2005, CNPS3100, and the CNPS5000.
The CNPS2005 and CNPS3100 are a unique
flower design. This design allowed Zalman to triple the amount of
surface area allowing the flowers too cool that 1.5 GHz monster
without having a loud 7K delta on it. The flower uses an interesting
fan mounting design. Because you can't mount a fan directly on to the
flowers, you have to use a fan that is mounted on a bracket, which in
turn mounts onto your case to blow air on top of the flower, which
could be a problem for people with inverted power supplies that sit
over the CPU. This mounting design takes away any of the noise
associated with a normal heatsink and fan combo because the fan isn't
touching the heatsink causing vibrations that make other HSF combos so
loud.
The CNPS5000 takes a more traditional
approach to cooling. This time Zalman has mounted the fan on top of
the heatsink instead of on a bracket. Another nice feature about this
heatsink is that is uses the AMD/Intel mount through the motherboard
specifications. This is a very welcome feature because you no longer
have to struggle with clips, and risk crushing your core or having a
screwdriver slip and leave a nice gouge in your motherboard. The
CNPS5000 is a very heavy unit and if you look closely at the bottom
you can see were the copper has been rounded to for the flower type
shape. I was kind of worried at first because it looked like the
separations in the copper caused by the rounding process appear to
extend into where the core of the CPU would be.
All of the heatsinks come with the
Zalman's "noiseless connecter" which is basically a big
resistor that is use to supply less voltage to fan so it spins slower
and thus producing less noise. But I personally don't know why you
would need it. These fans are already quiet; I didn't know they needed
to be silenced.
Cooler Specs:
| Specs |
CNPS2005 |
CNPS3100 |
CNPS5000 |
| Dimensions |
95~110 mm x 52 mm x 65 mm |
95~110
mm x 52 mm x 65 mm |
91
mm x 66 mm x70 mm |
| Fin Length |
65mm |
65mm |
18mm |
| Wing Height |
N/A |
N/A |
42mm |
| Number of Wings |
53~60 |
40~45 |
56~62
sheets |
| Wing Thickness |
0.3
mm |
0.3
mm |
0.3
mm |
| Heat Dissipating Material |
Aluminum |
Copper |
Copper |
| Weight |
119
g |
238
g |
430g |
| Heat Dissipating Area |
2800cm2 |
2300cm2 |
Heat
Dissipating Area: 960~1060 cm2 |
| Thermal Resistance |
0.42deg
C/W (5V Silent Mode), 0.40deg C/W (12V Normal Mode) |
0.37deg
C/W (5V Silent Mode), 0.30deg C/W (12V Normal Mode) |
Thermal
Resistance
0.30deg C/W (5V Silent Mode)
0.25deg C/W (12V Normal Mode) |
Fan Specs:
| Specs |
CNPS2005
& CNPS3100 Fan |
CNPS5000
Fan |
| Dimensions |
80
x 80 x 25 mm |
60
x 60 x 25mm |
| Bearing Type |
Ball |
Ball |
| RPM |
Normal
Mode |
3000RPM(+-
8%)
|
Normal
Mode |
4500RPM(+-8%) |
| Silent
Mode |
1700RPM(+-
8%) |
Silent
Mode |
2700RPM(+-8%) |
| Noise |
Normal
Mode |
34.4dB(+-10%) |
Normal
Mode |
34dB(+-10%) |
| Silent
Mode |
20dB(+-10%)
|
Silent
Mode |
20dB(+-10%) |
Next up, the Zalman CNPS2005!
|
