Articles: Cooling

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Design and Functionality

Well, this is a classical tower heatsink 158 mm tall, 130 mm wide and 63.5 mm deep:



It consists of 46 nickel-plated aluminum fins (“lamellae” as Noiseblocker calls them). Each is 0.45 mm thick and the gaps between them are 2.0 mm wide:


The calculated effective heatsink surface is 6,160 cm2. The cooler weighs 660 g. Both these parameters are on the modest side, I would say, especially for contemporary super-coolers. However, Noiseblocker NB-TwinTec hasn’t yet earned the supper-cooler title. The heatsink sides are partially covered with the bent fin edges.

The top plate is of black color and bears the company logotype as well as the cooler name on it:


The cooler base is covered with traditional protective film with a warning that it needs to be removed before cooler installation. If you look at the same photo, you will clearly see all the optimizations made to the heatsink that should lower the airflow resistance. Typical staggered ledges along the sides where airflow enters and exits the heatsink with the overall heatsink profile towards the “inside” should allow the cooler to remain highly efficient at low fan(s) speeds and should also lower the noise. Here I would also like to add that each heatsink fin has eight technological holes in it.

Of course, the primary distinguishing feature of the new Noiseblocker NB-TwinTec cooler is a heat column going through the entire heatsink:

This heat column is, in fact a thick copper pipe 133 mm long and 25 mm in diameter, which works according to the same principle as a regular heatpipe. However, due to significantly larger contact surface between the heatpipe and the heatsink fins, it should boast higher heat transfer efficiency than a regular heatpipe. Theoretically, the contact surface of one heat column like that is six times larger than the contact surface of six copper heatpipes 6 mm in diameter. The only problem is that a heat column installed in the center of the heatsink cannot distribute the heat over the heatsink as evenly as the heatpipes spread out in the heatsink could do. Noiseblocker engineers decided to make up for this issue by adding two more 6 mm heatpipes along the sides of the base. Nevertheless, the lion’s share of heat load still falls onto the thick heat column. Here I would also like to add that the contact spots of the heat column and heatpipes with the heatsink fins as well as the base plate are all soldered through. The thinnest part of the base beneath the heatpipes on the sides measures 1.5 mm.

The finish quality of the contact surface of the base plate is satisfactory, nothing more:


We do have some issues with its evenness: the surface has a bump along the entire center of the base, which you can clearly see from the thermal paste imprint:


Noiseblocker NB-TwinTec is bundled with one very high-quality fan – Noiseblocker NB-Multiframe M12-P:


We are very well familiar with this model from our article called “Be Cool: Ultimate 120/140 mm Fans Roundup”, where it received our most favorable feedback.

The fan is PWM controlled in the interval from 1000 to 2000 RPM. The airflow in this case should change from 43 to 87 CFM, while the noise level is declared in the interval from 19 to 29 dBA. The fan is built on a high-quality nano-bearing with 130,000 hours of non-stop operation time.

The fan is attached using included wire clips that catch on to special slits in the heatsink sides:

There is another pair of clips among the cooler accessories, which can allow you to install a second fan. The soft corners on the fan frames serve as special vibration absorbers, which also lower the noise from the fans substantially.

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