Billet Labs has built a steampunk-style desktop that looks like it was assembled inside a Victorian power station, and it is trying to cool a Ryzen 7 9800X3D and GeForce RTX 5080 without relying on fans. The British liquid-cooling specialist paired the high-end gaming parts with a passive ”chimney” tower made of three radiators, betting that rising hot air can do the work that spinning blades normally handle.
The result is clever, expensive-looking, and only half practical. In short bursts, the system can cope; push it into demanding games, and the temperatures climb fast enough to trigger throttling, which is hardly a surprise for a platform carrying around 500 W of total heat output.
Three radiators and a giant aluminum base
The cooling stack is built from three radiators sized 40 x 20 cm, 28 x 14 cm, and 24 x 12 cm, arranged from largest to smallest in a tapering tower. That layout is meant to encourage natural convection, with warm air rising through the structure instead of being pushed by fans. The open-frame build also uses an 8 mm aluminum plate as the foundation, effectively turning the entire stand into part of the heatsink.
Inside the machine are a Gigabyte Aorus Pro B850 motherboard, 32 GB of DDR5 memory, and a 2 TB NVMe drive. The board is pressed tightly against the aluminum base through thick thermal pads, while polished copper tubes and brass fittings connect the loop like something designed for a museum exhibit rather than a gaming desk.
The one fan they did not fully escape
Billet Labs also chose a 600 W Flex ATX power supply, and unlike the rest of the system, it was left unmodified, so its built-in fan is still there. In practice, that fan is expected to spin very slowly or sit idle for much of the time, which is a useful reminder that ”silent” hardware often means ”as silent as the power delivery allows.”
The project’s most interesting part is not that it exists, but what it proves: passive liquid cooling can handle short loads, yet it struggles once sustained gaming stress enters the chat. Billet Labs says it plans to add a single quiet 120 mm fan at low speed, which is probably the correct answer if the goal is usable silence rather than a beautiful overheating sculpture.
Billet Labs passive cooling project specs
- CPU: AMD Ryzen 7 9800X3D
- GPU: GeForce RTX 5080
- Total heat output: about 500 W
- Radiators: 40 x 20 cm, 28 x 14 cm, 24 x 12 cm
- Memory: 32 GB DDR5
- Storage: 2 TB NVMe
- Power supply: 600 W Flex ATX