NVIDIA released a custom zero-fan gaming PC on May 20 that uses passive liquid cooling for its RTX 5080 graphics card. The system pairs the GPU with an AMD Ryzen 7 9800X3D processor and runs on a Gigabyte AORUS Pro B850 motherboard. Billet Labs built this machine to test whether high-end components can operate without active fans under heavy workloads.
Liquid temperature reaches 60 degrees Celsius causing CPU throttling under load.
The cooling setup relies entirely on stacked radiators measuring 120x240mm, 140x280mm, and a stacked 200x400mm unit. The system includes 32GB of memory and 2TB of storage powered by a 600W Flex ATX power supply. During testing with Cyberpunk 2077, the liquid temperature reached approximately 55.5 degrees Celsius while the RTX 5080 maintained its performance without throttling.
Spec comparison
| Spec | RTX 5080 Build |
|---|---|
| Cooling Type | Passive Liquid Cooling (Zero Fan) |
| CPU | Ryzen 7 9800X3D |
| GPU | RTX 5080 |
| Motherboard | Gigabyte AORUS Pro B850 |
| Memory | 32GB |
The thermal limits became apparent when the coolant temperature hit 60 degrees Celsius. At that point, the CPU began to throttle under load and averaged near 90 degrees Celsius on the cores. Billet Labs concluded that the machine technically functions but lacks the thermal headroom for daily use as a gaming rig.
This test highlights the practical challenges of eliminating fans from modern high-performance desktops. The RTX 5080 and Ryzen 7 9800X3D generate enough heat to push passive cooling systems beyond their sustainable limits under sustained stress.
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