Waiting for anything for eight years is long, especially for a computer case. But the wait might actually be justified when that case is the Kallios-Strycom phase change cooling system. After following this product since its Kickstarter days, I’ve witnessed the whole saga—from scammed backers to Strycom stepping in to save the project—and now I can finally say it was worth the wait.
This isn’t just any PC case. It’s a technological marvel that weighs a staggering 69 pounds (in its copper edition) and contains zero moving parts. No fans. No pumps. Just pure science and a massive copper heat exchanger that passively cools your entire system. I also took some time to see what Linus Tech Tips had to say about this PC. Here is what I gathered.
Engineering That Defies Convention
What makes this case extraordinary is its loop heat pipe cooling system. Inside the evaporator blocks, refrigerant boils when it contacts the hot components. This thermal energy travels up to the massive heat sink on top, dissipating into the air without fans. The refrigerant then condenses back to liquid and flows down to start the process again.
The most impressive part? The entire system is driven by capillary action—physics, not electricity, powers the cooling. There are separate evaporators for both CPU and GPU, connected by small return lines for liquid refrigerant and larger ones for gaseous refrigerant.
While this sounds like science fiction, it’s proven technology that Kallios uses in satellite cooling systems. They just struggled to mass-produce it for consumers until Strycom stepped in.
Building in a Boutique Beast
Building a system, in this case, comes with some unique challenges:
- The sheer weight makes it a two-person job
- Installation requires both Allen keys and Phillips screwdrivers
- The GPU cooler installation involves 17 precise steps
- The motherboard tray sits at a 45-degree angle to aid fluid circulation
- There are almost no cable management provisions
Despite these hurdles, the result is stunning. The industrial aesthetic combined with the copper finish (on the limited edition) creates a PC that looks like nothing else on the market.
Performance That Surprises
I was skeptical about how well this passive cooling system would handle high-end components like a Ryzen 9 7900X and an RTX 4090. But after hours of testing, I’m genuinely impressed.
While the CPU reached 81°C under load, the GPU stayed around 73°C even after hours of gaming with settings cranked up. That’s remarkable for a completely passive system cooling a 450W graphics card.
What’s even more impressive is the convection effect. Holding a piece of paper above the case shows significant airflow generated purely through rising heat—no fans required. The thermal camera confirmed that while specific components get hot, everything stays within safe operating temperatures.
The only quirk is the sound—a gentle boiling noise that resembles a toilet filling. It’s not loud but distinct and might take some time.
The Luxury Price Tag
Now for the painful part: this technological marvel costs $2,000 for the copper version and $1,000 for the aluminum model, and that’s before you add any components.
Is it worth it? For most people, not. But for those seeking the ultimate passive cooling with zero compromise on performance, there’s nothing else like it on the market.
Despite my initial concerns about Kallios’ ethics after the original Kickstarter debacle, they’ve delivered something extraordinary. The copper edition, limited to 500 units, isn’t just a case—it’s functional art that happens to cool high-end computer components without making a sound.
After eight years of waiting, the Kallios-Strycom case proves that sometimes the most ambitious projects, despite delays and setbacks, can still deliver something truly revolutionary. This might be the coolest case of the decade for the deep-pocketed PC enthusiast who values silence and engineering excellence above all else.
Frequently Asked Questions
Q: How does the cooling system work in this case?
The case uses a loop heat pipe cooling system with refrigerant that boils when it contacts hot components. This thermal energy travels to the heat sink, where it dissipates. The refrigerant condenses back to a liquid and returns to the evaporators. The entire process is driven by capillary action and physics—no pumps or fans are required.
Q: Can this case actually cool high-performance components like an RTX 4090?
Surprisingly, yes. Testing showed the RTX 4090 maintained temperatures around 73°C even after hours of gaming at high settings. While this is warmer than you might get with active cooling, it’s well within safe operating temperatures for a completely passive system.
Q: What happens if I want to upgrade my GPU in the future?
The GPU cooler is specific to each graphics card model. Fortunately, Kallios includes a voucher for a free GPU cooler upgrade, which is especially valuable considering many backers had to wait through an entire GPU generation before receiving their case.
Q: Is there any noise at all from this passive cooling system?
While there are no fans or pumps, the system does produce a gentle boiling sound as the refrigerant works. Some users describe it as similar to a toilet tank refilling—it’s not loud but noticeable in a quiet room.
Q: Is the copper version worth double the price of the aluminum model?
Probably not, from a pure performance standpoint—the cooling efficiency isn’t significantly better. However, the copper version is limited to 500 units and offers a unique aesthetic many enthusiasts find appealing. It’s more of a collector’s item that happens to be functional rather than a practical upgrade.
Finn is an expert news reporter at DevX. He writes on what top experts are saying.
