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Design and Functionality

Deepcool FROSTWIN looks great! This is one of those coolers that will inevitably catch your eye in the store. Of course, the main appeal comes from two black 110 mm fans with glossy nine-blade impellers:

 

 

The external side of the fan frames is embossed with waves symbolizing the direction of the airflow. Had they nickel-plated the heatsink, Deepcool FROSTWIN would be hands down the most beautiful cooler out there, but the manufacturer decided not to do that (most likely in an attempt to lower the price of the product).

As the same time, I can’t say that Deepcool FROSTWIN is a large cooler: it is only 151 mm tall. Its depth and width are 121 mm each:

 

The design of Deepcool FROSTWIN cooler is fairly simple. 0.5 mm thick aluminum fins in two distinct arrays are pressed against four copper heatpipes 6 mm in diameter. Each array has 38 fins. The gaps between the fins are 2 mm wide:

  

 

There are two 110 mm fans installed between the heatsink arrays and on the outside of the cooler. They push the air through the heatsink body:

 

Note that the fins have unique wavy profile enhanced with additional cut-outs on airflow enter and exit, which reduces the airflow resistance and improves the cooling efficiency at low fan speeds.

The heatpipes pierce the heatsink lengthwise in the very center of the arrays:

Since the fins are quite narrow (only 25 mm), this particular approach makes a lot of sense. The use of staggered rows wouldn’t be justified in this case.

Deepcool FROSTWIN uses their own patented Core Touch Technology (CTT). Despite the unique name, this is a pretty common heatpipe direct contact implementation with 1.5 mm gaps in the base between the heatpipes:

This base type is slowly becoming obsolete and gives way to a more advanced solution that doesn’t use any aluminum to fill the gaps between the heatpipes in the base of the cooler. However, as we can see, some manufacturers still use the first generation of this technology for low-cost reasons (there is no soldering involved).

The contact surface of the cooler base plate is of typical quality for coolers of this class: we can see the machine marks, but we can’t feel them to the touch. As for the evenness, Deepcool FROSTWIN has done an excellent job:

As we have already mentioned above, FROSTWIN is equipped with two identical 110 mm fans with nine sharp blades:

The fans have no marking of any kind and their speed specifications are somewhat strange. The outside fan rotates with a constant speed of 1600 RPM creating 55.5 CFM airflow and generating 21 dBA of noise. However, the fan between the heatsink arrays is PWM controlled and supports 900-1600 RPM speed range. It is not quite clear what they were trying to accomplish by utilizing an approach like that, because the cooler will remain pretty noisy even when the CPU is idling, and the internal fan will slow down the airflow from the outside fan. In other words, it seems to be a pretty strange attempt to lower the cost as the expense of a second PWM-controlled fan. The MTBF of the fluid-dynamic bearing in the fan motor is not specified.

 
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