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Briefly about the main thing

So, without maintaining a normal thermal regime in the case, we will not see good luck! To cool the air inside the case, any computer has at least one fan. This is a power supply fan. They need to be properly disposed of. And then opinions diverged. Some people think that the fan should blow inside the case, while others – that out.

Let’s not argue. The problem that we are going to solve is that heated air builds up in the case. Therefore, the correct solution to this problem should involve first of all the removal of heated air. The power supply fan should blow out.

The standard for ATX enclosures is confusing. According to this standard, the fan of the power supply must blow the processor. The thought is tempting. There is a lot of space in the power supply, and you can install a fairly powerful fan.

It was assumed that only a radiator could be installed on the processor, and the power supply fan, like Truffaldino from Bergamo, would cool both the power supply and the processor heat sink.

However, no matter how good the intentions, it turned out “as always.”

The standard was developed a very long time. By the time ATX-format cases became widespread, it turned out that the processor could no longer work without a personal fan. It turned out that the processor is cooled by itself, and the fan of the power supply only supplies fresh air to it from the outside. But such a task was not set for developers of the standard for ATX format cases. In those days, the power of computer elements was not enough to significantly heat the air inside the case. Practice has shown that it is impossible to supply external air to the upper part of the housing, where the power supply is located. Hot air in the most incomprehensible way began to accumulate in the lower part of the body and did not want to be removed. Case manufacturers have even begun to make additional ventilation holes in the bottom of the case. Probably, such cases are familiar to many.

Hot air was constantly flowing from the vents, alarming users. But these holes did not solve the cooling problem.

In particular, a Pinnacle ReelTime board was installed in one of these cases. The board overheated and refused to work. For its cooling, two powerful fans were installed, blowing the board.
It would seem that powerful fans, ventilation openings “at hand”, well, why not work! Did not work out.

When the meaninglessness of the solution laid down in the standard for ATX enclosures became obvious to everyone, computer case manufacturers turned a blind eye to this standard and began to produce enclosures of allegedly ATX format, but those in which the power supply fan blows hot air out of the enclosure. It is with such power supplies that almost all cases are now equipped
If we are not talking about a home computer, but about a server or a powerful workstation, then, as a rule, one fan in the power supply is not enough. If it is supposed to “overclock” the system, then this fan will always be few.

First of all, additional fans must be installed in those places where strongly heating elements are located, and installed so that heated air is thrown out. Good enclosures have room for this to install additional fans.

Only the main thing, as in any good deed, is not to overdo it. A conventional housing has few openings through which fresh air can enter the housing. If you install a lot of exhaust fans, then they still can not remove more air from the housing than fresh air enters the housing. Vacuum in our conditions is unattainable. Fans will operate with a slip, and the cooling quality will only worsen. To compensate for airflow resistance when installing multiple exhaust fans, it is advisable to install at least one supply. For this, in ATX-format cases, a space is allocated in the lower front part of the case.

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