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Industrial computers · Compact

Fanless industrial mini PC: when to choose one and what to check

In an electrical cabinet, a dusty plant or a vehicle, the fan is the first part to fail. A fanless machine removes that problem, in exchange for some limits worth knowing before you buy.

ACD&CO technical team8 October 20266 min read

Why fanless

With no moving parts, the machine does not draw in dust or moisture, makes no noise and removes the most common cause of failure in dirty environments. Heat leaves through the enclosure itself, which acts as the heatsink: that is why they are usually finned aluminium.

Their limits: sustained power and graphics

Because they dissipate only through the enclosure, they take low-power processors and, as a rule, no dedicated GPU. What matters is not peak power for a few seconds but what they sustain for hours inside their enclosure and in their real location. That is why we test them for 24 hours at full load inside the final enclosure.

If the project needs a GPU (vision with deep learning, AI at the edge), the alternative is a compact with filtered airflow or a high-performance industrial range.

What MIL-STD-810H means

It is a US Department of Defense standard that defines how to test equipment against temperature, humidity, vibration, shock, altitude and other conditions. A unit tested to MIL-STD-810H has passed those tests; it is not a military approval. Ask which specific methods were tested and with what result: the standard has many.

I/O, power and connectivity

What sets an industrial machine apart from an office mini PC is the connectors: wide-range DC input (typically 12 to 24 V), RS-232/RS-485 serial ports for older machinery, isolated digital I/O, CAN in vehicles, two or more network ports, a slot for a 4G/5G modem and a TPM to encrypt the disk.

Mounting and protection

DIN rail in cabinets, VESA behind screens or wall mounting. Most fanless machines are IP40 (protected against objects, not water); washdown or outdoor areas need an enclosure with higher protection.

The same model for the whole project

In a roll-out of dozens of machines, a board change halfway through means redoing images and validation. Industrial ranges have long life cycles; our industrial range has guaranteed supply for 36 months.

Fanless, with fans or a workstation

Which machine for the job and the environment
JobEnvironmentMachine
Control, data gateway, signage, classic visionCabinet, dust, vibrationFanless industrial
AI at the edge, deep-learning visionVentilated cabinet or deskCompact with GPU and filtered airflow
Design, simulation, model trainingOffice or server roomTower workstation

Frequently asked questions

Do fanless machines get hot?

The enclosure is warm or hot to the touch because it is the heatsink: that is normal. It should have air around it and not be installed against heat sources.

Can they take a dedicated GPU?

Generally not, because of the heat they would have to dissipate. For AI or deep-learning vision, a compact with a GPU and filtered airflow.

Can they run around the clock?

The Professional 24/7 family in our industrial range is rated for continuous operation.

Where will the machine work?

Tell us the environment, the I/O you need and how many units. We send a written proposal in under 12 business hours.

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