Articles: Cooling
 

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Design and Functionality

The new cooler makes the impression of a relatively compact and light-weight product, but it can hardly be considered small:

 

Enermax ETD-T60-TB weighs only 540 grams, which is very little for contemporary processor coolers. It is 112 mm tall with a fan, 137 mm wide and 151 mm long:

The cooler consists of an aluminum heatsink on six copper heatpipes coming out of the cooler base. Four heatpipes come out on one side of the base and the remaining two – on the other side:

  

This entire structure is cooled with a single 120 mm fan. The base surface is covered with protective plastic reminding that it needs to be removed before installation:

 

The heatsink, base plate and heatpipes are all nickel-plated, which will ensure that they do not lose their visual appeal for a long time.

The heatsink fins on the airflow entry side are of variable height:

This helps lower the airflow resistance and ensure high efficiency of the Enermax ETD-T60-TB cooler at low fan speed. The heatsink body is built of 55 aluminum fins, each 0.4 mm thick that are positioned 1.8 mm away from one another. The thermal resistance of this cooler declared in the specifications is 0.12 °C/W.

Moreover, the heatsink has all the same optimizations as the ETS-T40-VD discussed in our previous article, such as: VGF (Vortex Generator Flow) and VEF (Vacuum Effect Flow), even though unlike ETS-T40-VD, its heatpipes pierce the heatsink evenly and at the same level:

The heatpipes at the base lie side by side in special grooves:

It is very difficult to tell from just visual inspection what the contact between the heatpipes and the base plate is, because the traces we found looked more like thermal glue rather than soldering residue. However, Enermax claims that all contact spots are soldered together.

The contact surface of the base plate is more or less even, but its finish is barely satisfactory at best:

You can not only see, but also feel to the touch the radial machine marks on it.

Enermax ETD-T60-TB is equipped with one 120x120x25 mm T.B.SILENCE PWM fan with nine dual-segment “Batwing” blades and a “Carved Halo” frame:

According to the manufacturer, these Batwing-shaped blades combined with a perforated frame create 20~30% higher airflow compared with fans featuring common blades.

The fan rotation speed is automatically controlled using PWM approach in the interval from 800 to 1800 RPM creating 37.57-86.70 CFM airflow and generating 10-21 dBA of noise. They also claim the fan’s static pressure is 0.72-2.41 mmH2O.

Moreover, the fan is built with a unique self-lubricating magnetic Twister bearing, which should last at least 100,000 hours (over 10 years of non-stop operation). The maximum fan power consumption shouldn’t exceed 5.4 W at 0.45 A current. However, our tests showed that the fan power consumption didn’t exceed 2.04 W and the startup voltage equaled 3.9 V.

 
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