Corsair CPU Cooler Software

Service life of the fan
The service life of a fan refers to the trouble-free working time of a radiator product, and the service life of high-quality products can generally reach tens of thousands of hours. When the price and performance are similar, choosing products with a long service life is obviously more effective in protecting our investment. The lifespan of a fan is composed of various factors such as motor lifespan, operating environment, and power supply.
 Air supply form of heat dissipation fan
Axial flow fan
The most widespread form is to use axial flow fans to blow downward, which is so popular because of its good overall effect and low cost. In addition, it seems to be becoming increasingly common to reverse the direction of the axial flow fan and turn it into an upward draft. The difference between the two types of air supply lies in the different air flow forms. When blowing, turbulence is generated, and the air pressure is high, but it is prone to resistance loss; During ventilation, laminar flow is generated, with low wind pressure but stable airflow. In theory, the heat transfer efficiency of turbulent flow is much higher than that of laminar flow, making it the mainstream design form. But the movement of airflow is also directly related to the heat dissipation fins. In some heat sink designs (such as overly tight fins), airflow is greatly hindered by the fins, and using suction may have better results. As for the design using side air blowing, there is usually no difference in effect from top air blowing. A more effective improvement method is to establish a dedicated cooling air duct for the CPU, so that it is not affected by the hot air near the CPU, which is equivalent to reducing the ambient temperature. Although axial flow fans are widely used, they also have inherent defects. The axial flow fan is blocked by the position of the motor, and the airflow cannot smoothly pass through the middle of the blowing area, which is called the "dead zone". On a typical heat sink, the middle fin has the highest temperature. Due to this contradiction, the heat dissipation effect of the heat sink is not sufficient when using an axial flow fan.
Centrifugal fan
Centrifugal fans are completely different from axial fans in the form of air blowing and are gradually being used in CPU cooling, commonly referred to as "turbo fans" by computer users. The advantage of this type of fan is that it effectively solves the "dead zone" problem. The difference between centrifugal fans and traditional fans is that their blades rotate in a vertical plane, and the air inlet is located on the side of the fan. The airflow received by the bottom of the radiator is evenly distributed. There are no obstacles in the blowing direction of the centrifugal fan, so there is the same airflow at all positions. At the same time, its wind pressure and air volume adjustment range is also larger, and the speed control effect is better. The negative impact is the same as high-power axial flow fans - they are expensive and noisy.
Design of other improved air ducts
Another way to solve the wind blind spot is to change the direction of the fan's output. The traditional installation method for heat sinks is with the airflow facing downwards, which is perpendicular to the CPU. After improving the air duct design, the fan was changed to lateral blowing, so that the direction of the airflow was parallel to the CPU.
The primary benefit of lateral blowing is to completely solve the wind blind zone, because the airflow passes parallel through the heat dissipation fins, and the airflow speed is the fastest on the four sides of the airflow cross-section, while the CPU's heat source is located on one side. In this way, the heat absorbed by the CPU cooling base can be taken away in a timely manner. Another advantage is that there is no rebound in wind pressure (usually when blowing downwards, a portion of the airflow rushes to the bottom of the heat dissipation surface and rebounds, which affects the direction of airflow in the radiator and causes a loss in the efficiency of heat exchange). The heat exchange efficiency is higher than that of downward blowing.

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