Skip to main content

How does this amazing custom PC stay cool without fans? It ‘breathes,’ of course

Fanless PC builds aren’t anything new, but YouTuber Matt Perks from the DIY Perks channel decided to take the concept a step further. The result is a massive fanless PC chassis that “breathes” to keep itself cool. And even with DIY sensibilities intact, the case works surprisingly well.

Building the world's first 'breathing' PC

In an 18-minute video (above), DIY Perks details the trials that went into creating such a unique design. The case is comprised of two chambers, one housing the “lungs” and the other holding the components. Using opposing magnets and cheap water pumps, the bottom portion moves sheets of acrylic back and forth automatically. As the sheets move, they push out warm air and draw in cool air, just like a PC fan would.

However, this design alone wouldn’t keep the components cool. As the video explains, pushing out hot air would simultaneously draw back in the hot air that was pushed out on the opposing side, effectively canceling the cooling potential. To get around this issue, the top chamber has a series of vents that open when air is being drawn in before sealing.

This forces the air out of the top of the case, which is exactly where it’s supposed to go. Mounted above the top chamber is a massive radiator that handles cooling for the CPU and GPU. The two components are connected through a custom water loop, with the CPU mounting block holding a pump and reservoir.

The build alone is astounding, but the thermal performance is even more impressive. Even with an unproven cooling design, DIY Perks outfitted the rig with a 16-core AMD Ryzen 5950X and Nvidia RTX 3080. As the flagship products from their respective brands, these components are some of the most powerful options on the market. That’s great for a traditional build, but more power brings more heat.

A breathing fanless PC is put through its paces.
DIY Perks

Still, the design held up in thermal tests. In a Prime95 stress test of the CPU, DIY Perks saw the processor hit a maximum temperature of 60 degree Celsius. The graphics card only crept slightly higher to 62 degrees Celsius in a FurMark test.

Although higher than a custom watercooling rig, those are totally usable temperatures. A big reason why is the size and smart airflow design of the case, which allows the components to stay passively cooled without raising the overall temperature inside.

And it’s silent. DIY Perks went as far as to include a passive power supply to keep fans completely out of the system. Outside of a small amount of noise from the acrylic plates and some light flapping from the air valves, the machine produces almost no noise.

The design is beyond anything we’ve ever seen before. Although we hit the highlights here, we highly recommend watching the full video to see what went into this build. At one stage in the process, Perks even went through the process of plating a magnet with nickel to get everything to work.

Editors' Recommendations

Jacob Roach
Senior Staff Writer, Computing
Jacob Roach is a writer covering computing and gaming at Digital Trends. After realizing Crysis wouldn't run on a laptop, he…
How to build a PC for Starfield
The Hyte Y40 PC case sitting on a coffee table.

Starfield is among the most anticipated games of the year, or perhaps even the last few years, and it's only available on PC and Xbox Series X|S. It's no wonder that it's got people turning to PC gaming in droves. Whether you're looking to upgrade or buy a new computer entirely, you'll be pleased to know that now is a good time to shop, as the prices of components are quite low.

It's a pretty demanding title, though, so not just any gaming PC will do -- you'll need a top-notch computer that ticks a few boxes. It's possible to get by with a lower-end PC due to the game's support for FidelityFX Super Resolution 2 (FSR 2), but we're focused on machines that will provide the optimal experience in the game.
The bare minimum

Read more
Is your PC acting up? Here’s how to fix it
A PC gaming desktop setup with two monitors and a gaming chair.

Whether you have one of the best desktop computers or a 10-year-old PC, things can go wrong sometimes. Freezes, crashes, overheating, or even the dreaded Blue Screen of Death (BSOD) -- there are plenty of issues that sometimes plague PC users, and when it happens to you, you might feel at a loss as to what to do.

Good news -- not every malfunction requires taking the PC to a professional repair service (although some of them definitely do). If you're unhappy with the way your PC performs, start by checking out our comprehensive guide to troubleshooting a PC, because it might turn out to be the only thing you need to get it all fixed. On the other hand, if your computer won't turn on at all, we have a separate guide for you.
PC issues? Start here

Read more
How Immortals of Aveum wants to rethink PC optimization with Unreal Engine 5
Jak winds up his magic fist in Immortals of Aveum.

Immortals of Aveum is introducing a new way to think about optimizing your games on PC. It's called the Performance Budget Tool, and it's meant to help guide players through the dense graphics menu to understand how settings impact their performance.

Games have hinted at this type of feature in the past, offering a general sense of how each setting impacts your GPU and CPU with a slider (Resident Evil 4 and The Last of Us Part One, for example). Immortals of Aveum assigns a CPU and GPU number to each setting that increases as you turn the option up.

Read more