Identify the wind direction
The indoor ambient temperature is 23 degrees. As a result, the temperature of the air supply and exhaust fan boxes are both 35 degrees, but the CPU temperature is 61 degrees when the air is supplied, and only 56 degrees when the air is drawn. There is an amazing difference of 5 degrees! ! !
Analyze the reasons for this situation. The main reason is that the high-temperature air above the mosfet tube in the power supply area of the motherboard is brought to the CPU area, and then sucked by the CPU fan, thus causing the CPU temperature to remain high. When switching to ventilation, the hot air above the mosfet tube flows directly to the outside of the case, and does not pass through the top of the CPU area.
In addition, ventilation is not only beneficial to the CPU temperature, but also creates a certain negative pressure inside the chassis due to the simultaneous ventilation with the power supply fan, and the cold air outside will enter the interior through the empty fan port in front to replenish, and at this time, the hard disk, memory, and graphics card will all be exhausted. A certain degree of cooling. Compared with the short circuit in which the air flows from the outside through the chassis fan and then exhausted from the power supply fan after passing through the CPU area during blowing, the advantage is obvious. In fact, the air path at this time is basically the same as when the two chassis fans go forward and back out, but the air volume and pressure are slightly smaller, and the airflow speed inside the chassis is lower.
