Articles: Cooling

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Let’s see how the heatpipes are arranged in the cooler base:


As we have already said, there are three heatpipes. However, they are looped in such a way that there are six heatpipes fragments in the cooler base. Two central heatpipe fragments that bear the maximum workload enter the larger heatsink and run closer the fan:

Two next heatpipe fragments go in a different direction and enter the smaller heatsink. And two heatpipe fragments on the sides pierce the larger heatsink along its outer side. So, the heatpipes are arranged in a very smart and effective way.

The heatpipes are soldered to the base of the cooler and to the heatsink fins:

This is another indication of manufacturer’s serious intentions in terms of implementing the ideas first brought up in Zalman CNPS9700 LED.

The finish quality of cooler copper base is ideal:

Besides, the base is impeccably even. We couldn’t find even the tiniest flaw in the remarkable thermal compound imprints on the glass surface as well as on the processor heat-spreader:

There is a 110 x 25 mm fan installed between the heatsink arrays. It features nine semi-transparent blades:


Its rotation speed is controlled with pulse-width modulation method (PWM) between 1000 and 2000 RPM. In fact, since the fan supports automatic rotation speed adjustment there was no need to include a rotation speed controller with the cooler. The claimed acoustic specification is 19.5 ~ 38.0 dBA. Unfortunately, there is no info on the created airflow intensity among the revealed official specifications.

The fan uses ball bearings with 50,000 hours (over 5.7 years) of non-stop operation. Maximum fan power consumption shouldn’t exceed 9.6 W:

The fan is fastened to the plastic insert with three screws, and the insert has special hooks that catch securely to a special groove in the wider part of the heatsink. In fact, you can replace this fan with an alternative one if the bearing fails, however, you will need to cut it off the standard 120-mm fan frame first. You can even install a standard framed fan between the heatsink arrays attaching it with ties. However, we are not going to talk about possible modifications of the new Zalman CNPS9900 LED cooler in our today’s article, so let’s continue to our next chapter.

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