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No fan cool and quiet! Do not fan the CPU radiator understand?

2022-09-27


No fan, to the player may just be silent

Let's not talk about the performance of fanless installed configuration for the moment, and explain its existence from the demand. Many friends must think that the biggest significance of fan-free solution is, of course, silence. After all, the mainstream 360 water-cooled system composed of 12cm fans is rarely less than 50 decibels in the case of heavy operation of the system. Coupled with the noise of the case fan and the graphics card fan, it has become a big noise source in the room.

This, of course, is a major advantage of fan-free cooling solutions. In fact, there are still a lot of fan-less office machines and living room HTPCS on sale today, all selling noise.

Machines such as fanless HTPC, soft routing, etc., have always existed, selling low noise at the expense of performance loss with low-power and low-voltage cpus
But the low noise is mainly for the average PC DIY player, there is no fan cooling, which is the advantage of passive cooling.

No fan is required in specific scenarios

For many users in specific scenarios, there is actually no passive fan heat dissipation, but it is always a rigid existence.

Some scenarios require a computer that is powerful enough not to use a low-voltage, ultra-low voltage processor, but not enough to allow fans to make noise and blow dust, hot air and germs around -- like in a factory clean room or hospital. This is where the fanless solution comes in.

Why can't ordinary computers with fans be used in places like factories and hospitals? After all, they just blow hot air out of the computer. What harm can they do? Well, they don't just blow hot air out of the computer, and that's the problem.

In order for cooling fans to work, they need to draw air into the case from the outside environment. Unfortunately, this means that they bring other things that are present in the environment into the computer as well: dust, bacteria and viruses. That's why when you look at some old computers, they have dust buildup in and out of the vents. This is usually not a problem in the home or office, as long as you dust the vents on a semi-regular basis. But in hospitals or factories, it's a huge problem.

Manufacturing is still often a process that generates waste. No amount of automation can change the fact that when raw materials are milling, sawing, grinding, sanding, lathes, etc. into usable products, they produce a lot of particulates. As a result, many factory computers can be said to work in the air such as metal/plastic shavings or sawdust. If you drop a standard consumer-grade computer into these environments, the particles will inevitably be sucked up by fans.

In the case of inhaled metal shavings, their electrical conductivity will inevitably cause a short circuit in the computer's electronic components. On the other hand, things like sawdust can end up clogging up a computer's airflow and acting as an insulator, trapping heat and causing the computer to malfunction. In a typical home or office environment, it can take several years for the buildup to have an adverse effect. But in a factory, it can build up in a month or two to the point where it compromises machine safety.

And in the hospital scene, the problem with computer fans is that they blow stuff out of the computer. Use a computer with a cooling fan in a sick ward or pathology lab, and these airborne pathogens will be sucked into the computer and blown out again, circulating around the room, throwing the bacteria several meters into the air. In a ward full of patients, this could be a hospital-like disaster waiting to happen.

The widespread use of wheeled workstations in hospitals increases the risk of hospital-related accidents caused by PC fans
Many hospitals, in particular, rely on workstations on wheels and connected detection sensors to medical devices, with health care workers wheeling machines around using fan-equipped configurations that may inadvertently carry deadly pathogens from ward to ward, blowing them through the air around already weakened patients.

No fan cooling, heat dissipation technology imagination

Today, fan-less silent power supplies, fan-less silent graphics cards for certain performance (or simply using a core) are relatively easy to find. However, as the TDP of CPU increases, the difficulty of cooling fan-less passive CPU becomes higher and higher.

Therefore, the technical difficulty of PC passive CPU heat sink is getting higher and higher.

In simple terms, there is no passive radiator fan could fit the mainstream CPU, is combined with the traditional metal radiator fins, heat dissipation armor, a variety of cooling element scheme, such as heat pipe on structure at the same time the use of multi-layer composite structure, the relative air cooling and water cooling radiator more intensive cooling components arrangement plan, to do our best to achieve the mainstream performance CPU fan cooling.

It can be said that at present, water cooling, air cooling and other technologies due to the help of active heat dissipation, we still stay in the fin + heat pipe set, no fan passive heat dissipation technology has been a thermodynamics engineer to play the big stage, realize the heat dissipation technology and structure imagination open. Even the little Lion predicts that these passive cooling structures they have invented now will likely be absorbed by air cooling, water cooling and other technologies in the future, to further tap the cooling potential.