This Perfectly Silent Fan Took 300 Years to Make

Linus Tech Tips

Linus Sebastian

Ventiva’s Ionic Cooling Modules, AMD Strix Halo Reference Design, Silent Laptop Cooling, Laptop Board Space Savings, Mass Production at Scale

Ventiva’s Pitch

Linus: This is an ionic cooling module. It moves all the heat away through your device completely silently with zero moving parts. That sounds impossible. And yet, that’s exactly what Ventiva claims — that a 300‑year‑old physics principle is going to revolutionize PC cooling. And I wouldn’t believe them except that they brought receipts.

Their booth contains numerous real‑world examples of both the space savings and the cooling advantages that their technology can deliver, in everything from handheld gaming consoles to VR headsets to this high‑powered Strix Halo laptop reference design that was built in collaboration with AMD and is running silently. Are you kidding me right now?

Here’s another demo. This is just a module in a 3D printed housing. All I can hear from this is the whoosh of about 1 CFM of air. I can more feel it than hear it. It doesn’t even buzz or vibrate like competing fanless coolers from before.

And even better, this ain’t no carbon nanotubes someday technology. According to their CEO, the production challenges are already behind them and they’re ready to manufacture millions of units at scale, like now. And even at prices that are competitive with good old‑fashioned spinning plastic. Let’s dive deep after a good old‑fashioned spinning segue to our sponsor.

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How Ionic Wind Cooling Works

Linus: The phenomenon of ionic wind was first observed way back in 1709 by Francis Hauksbee when he rubbed a glass tube creating a charge that generated a subtle force on his cheek. Then the technology sat mostly unused for like hundreds of years. But no more.

Here’s how it works. This tiny wire that you can barely see gets energized, which forms a plasma that strips electrons off of nearby molecules. Those now positive ions race towards this negatively charged grill at the backside of the cooler. On the way they collide with inert air molecules, creating a subtle but consistent flow of air through the module.

It’s not a ton of airflow, only about 1 CFM, which compared to a typical laptop fan that might be rated for 5 CFM or more sounds like a problem. But see, there’s a lot more to life than bigger number more better. Fans are generally rated in open air, and by the time you put them in a laptop chassis with all the airflow restriction that that entails, those numbers fall off a lot.

The Strix Halo Reference Design

Linus: Let’s go straight over to the most impressive demo. This Ventiva x AMD reference design lines up three ionic cooling modules along the backside to cool a Strix Halo SOC that’s running at 28 watts. So yeah, the power’s been reduced a little, but we’re still talking about a 16‑core Zen 5 CPU with up to 128 gigs of RAM and raw GPU power that is not that far off of the PlayStation 5.

It’s running right now and it’s completely silent. For contrast, here’s my Strix Halo daily driver. Can you like really hear that now? Yeah. Now she’s ramping up. Meanwhile over here — dude, I bet you can hear that one over this. Hold on, I’m going to turn that off. Absolutely nothing, just heat.

Why Space Savings Matter

Linus: But the silence is just part of the story. And to really understand the value of these ionic cooling modules, we’ve actually got to go a little bit deeper into laptop design. This is a pretty typical laptop motherboard. The CPU or SOC goes in the middle, VRMs and RAM go around it, and your fans go here and here.

This creates a lot of challenges for designers. First and foremost is the waste. Nobody makes a PCB that is this shape. So the valuable copper here and here gets taken out and sent to the recycler. Bye‑bye, money. Nice knowing you.

Also, this region right here is referred to as a pinch point because high‑speed IO and charging goes where? On the sides, where the user can plug into it, right? But it needs to connect to what? The processor here. So to get all of the necessary power and data traces through here often requires costly, many‑layered PCBs in order to maintain signal integrity.

The last big one is particularly relevant in light of Nvidia’s recent RTX Spark announcement. High‑speed memory must be physically close to your processing. And if you can create more room around the processor, that means more potential for massive local memory to run more useful AI models locally.

All in, Ventiva estimates that by using their cooling modules, they can return as much as 7,200 square millimeters to board designers that they can use however they see fit. Less costly PCB? Sure. Bigger battery? More storage? The sky’s the limit.

The Power Supply Module and Modularity

Linus: And Ventiva already did the heavy lifting for you to make their coolers easy to integrate. For instance, an ionic cooler, as you guys can probably imagine, doesn’t exactly run off of a standard four‑pin 12V fan header, right? No, it doesn’t. Which is why they created these.

This is a microcontroller‑driven power supply that handles everything. Standard four‑pin PWM goes in, and airflow adjustments to your ionic cooler go out. It can either be integrated directly into the motherboard, like we saw in that AMD system, or maintained as a separate module.

And it handles some other key functions as well. One of the key dangers to the longevity of an ionic cooler is dust. So the microcontroller can run periodic cleaning cycles where it actually runs a tiny little slide across the wire to clear it of any contaminants. And, okay, this one’s really cool — it can also detect dust and then report through software to even do things like let your IT team know, “Hey, building B has a lot of dust going into the laptops. Do you want to look into that?” Like, holy crap.

The microcontroller is firmware flashable, so if Ventiva ever needs to fine‑tune its operation, that can be done out in the field, and each power supply module can do up to three ionic coolers.

Another piece of the ease‑of‑use puzzle is modularity. So far we’ve focused on the widest module, but you can clearly see in this Nintendo Switch 2 mock‑up that they’re using a much narrower one. They’ve actually got a whole range of them, and all are designed to be stackable, depending on what fits best in a given device. So cool.

Why Nobody Has Done This Before

Linus: So at this point, my biggest question was, if this stuff is so great, then why has nobody ever done it? And in the simplest terms, the answer was, because no one has ever done it.

Fans are pretty good, pretty cheap, and if you want to make one, there’s a thousand books that you could read on design, manufacturing, stress testing, failure analysis, you name it. Nobody ever got fired for building a laptop with a fan. By contrast, to make ionic cooling a reality, they had to write the thousand books. And there was no guarantee that there would be a mass‑producible product that anybody wanted at the end of the rainbow.

There’s a lot of secret sauce that they won’t really get into, like the material of the wire or how exactly their microcontroller manages voltages and currents across the wire. But the bottom line is, through a combination of fine‑tuning both things and the actual physical configuration and spacing of the modules, they figured out mass production.

But even that doesn’t guarantee success. The tech industry is a low‑margin, cutthroat industry, which has created a very risk‑averse culture. And convincing OEMs to throw out these and adopt these required a better pitch than “well, it’s quiet and it cools your thing.” Cuz they already had that. They had to show the space savings and the benefits for cutting‑edge SOCs like Strix Halo and RTX Spark. And sounds like things are going pretty good right now.

Limits and What’s Next

Linus: I mean, to be clear, it’s not going to be perfect for everything. This ASUS NUC mock‑up is probably about the limit of what would make sense, given that it needs six total modules in triple stacks on each side, two power supply microcontroller combo things. Any bigger than this and it might be better to just stick a fan in it and call it a day.

But still, this is first gen, baby, and I’m excited to see what’s coming in the future. Like, ah man, I’d love to build my ideal handheld with something like this. Silent gaming in the palm of my hand? Yes, please.

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If you guys enjoyed this video and you love exotic cooling solutions, why not check out the time we played around with a piezoelectric cooler? That was kind of neat.