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The Zalman CNPS9900 LED Flower CPU Cooler

The Zalman CNPS 9900-LED uses Zalman’s iconic flower design which is highly favoured by the company and many enthusiasts. It’s a design which situates a fan in the centre of two pure copper heatsinks. Airflow is then forced through the fins of one heatsink and exhausted from the fins of the other.

On arrival, a large plastic band is secured around the central circumference of the heatsink. Zalman reinforce on their website that this band should be removed and is only intended for protection while shipping. To remove the band it’s very easy – just a couple of screws secure it.

When removed, you can see the heatsink in full size. Each ‘sink is made up of thin pure copper fins to save on weight and to also reduce airflow resistance.

On the front heatsink side (where air is drawn in), there is one copper heatpipe flowing through all the fins and through the copper base; on the rear heatsink side (where air is exhausted), there are two copper heatpipes, which also flow through all fins and the base. These heatpipes are what dissipate the heat to the fins and keep the shape of the cooler. As they are pure copper, they give very impressive thermal conductivity.

Situated in the centre of both heatsinks is a blue LED fan. The fan is secured to the rear heatsink with a plastic mount. Powering the fan is a four pin PWM (pulse width modulation) connector; however, if your motherboard does not support this new technology, it can also be used in the same way as a 3pin connector.

The base of the Zalman CNPS 9900 is constructed using an aluminium top part and a pure copper base. The actual base is polished giving it a very reflective appearance, thus allowing it to transfer heat more quickly.

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