Steampunk-style gaming PC cools GeForce RTX 5080 without a fan
Fans are often an annoying part of a gaming PC due to the noise they make, but can hardly be avoided with powerful and correspondingly energy-hungry hardware. Billet Labs, a British manufacturer of high-quality components for PC water cooling systems, shows a modding project in the video embedded below, in which an AMD Ryzen 7 9800X3D and an Nvidia GeForce RTX 5080 ($1,299 on Amazon) are cooled entirely without a fan.
To do this, Billet Labs uses three heat sinks, which are connected to each other by a passive water cooling system. The heat sinks measure 40 x 20 cm, 28 x 14 cm and 24 x 12 cm. Without a pump, the cooling liquid only circulates due to the temperature differences between the liquid that has direct contact with the CPU or GPU, and the liquid in the heat sinks.
Billet Labs uses a Gigabyte Aorus Pro B850 mainboard, 32 GB RAM, a 2 TB SSD and a 600 watt power supply unit for this PC, which is not modified and is therefore cooled with a fan. The mainboard is mounted on an 8 millimeter thick aluminum plate with thick thermal pads to help distribute the heat.
Even without a fan, the PC works surprisingly well in many scenarios. In idle, the coolant remains relatively cool with a temperature of 28 °C. If the processor is fully utilized using Cinebench, the coolant heats up to 39 °C after half an hour and the CPU even reaches 90 °C, but performance does not drop. If the GPU is also used, for example in Cyberpunk 2077, the coolant reaches temperatures of over 55 °C – the performance remains stable, but the temperatures are higher than recommended for long-term operation.
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