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#Fan airflow direction Pc#

Check X Shape on the FanĪnother indication you can check is the X shaped on one of the two sides of the fan. If your case or CPU fans do not have an arrow, continue with the article to figure out the fan direction. However, not all fans have this arrow indication. The direction the arrow points towards is the exhaust, and the opposite is the intake.

The arrow represents the direction that air flows when the fan starts to spin. One simple way to determine the direction of airflow from the fans is by checking the arrows on the sides. Here are a few ways you can check the CPU fan direction. However, determining the fan direction in most CPU coolers and case fans can be daunting. When you attach it to a heat sink, the air will flow towards the heat sink, pulling in the air from the opposite direction. The stock CPU case fan comes with a plastic screw attached to it. You can check the direction of airflow in a CPU fan in multiple ways. This is an ideal scenario as the air will mostly enter the CPU from the dust filter, and the cooling is also efficient. In neutral air pressure, the number of intake and exhaust fans is the same. Therefore, your system becomes dusty if you have negative air pressure. Once this happens, air starts to flow inside the system through all openings inside the case, which means that the dust will enter through every opening and not only the dust filter. This will create a vacuum inside the CPU case. On negative air pressure, the number of intake fans is less than the number of the exhaust fan. However, as the system does not throw out the air efficiently due to fewer exhaust fans, this may cause the system to trap heat, making the setup slightly warmer. And thus, the insides of your system will be fairly clean. This will result in the air to pass into the system mostly through a dust filter.

Talking about positive air pressure, the number of intake fans exceeds the number of exhaust fans. When you insert the CPU fans, there are three possible cases of air pressure. Dust settlement and airflow is a fairly common and easy concepts to grasp. The overall internal component’s temperature not only depends on their usage, but also on factors like airflow, internal air pressure and dust settlement. However, if you make the CPU fans face the right way, you may see a drop in motherboard temperature and an increase in its efficiency.

#Fan airflow direction Pc#

The CPU case fan direction is one factor that most beginner PC builders overlook when building a PC.

What Are Positive and Negative Air Pressure?.

Does CPU Fan Direction Matter in Keeping System Cool?.

The power supply should be placed in a way that it is supplied with cooler outside air and not with the warm air from inside the case. In this case, no pun intended, the use of top or bottom fans is an effective addition to the front fans then. If your case has a closed front, the front fans are much less effective. For better GPU temperatures, on the other hand, you should aim the fans exactly into the area below the GPU, so that it pulls in more fresh air through its own fans. For lower CPU temperatures, the front fans are mounted in a way that they are directed at the CPU cooler and the warm air is dissipated directly via the rear fan. Most cases are designed for exactly this kind of airflow, so it is considered a universal solution that almost always achieves at least good results.Īfter checking the temperature of the system, the position of the fans should be adjusted, in case individual components have a particularly high heat generation. Since heat always rises and it is therefore cooler under the case than above the case, air vents without fans also support this way. The case fans are the main tools for controlling the airflow. Usually, a PC case is ventilated front to back and bottom to top.