The IMPOSSIBLE PC - 4x dual radiator ITX build
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Description
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Promos
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The video documents an ambitious attempt to fit a quad radiator water cooling loop into a tiny Mini ITX case, driven by the design challenge known as the Vector-1 concept. The host introduces the project by highlighting the need for extreme cooling for high-end components like a Ryzen 9 5950X and an RX 6900 XT within a compact enclosure, setting expectations for a difficult, high-effort build. Early on, the presenters discuss case options, budget considerations, and the rationale for choosing a small, affordable chassis that is border-line impractical for such cooling goals. The team then dives into the core build, starting with a gravity-defying upside-down CPU installation and a plan to mount two 120 mm slim fans at the case bottom as both case intakes and radiator intakes. They proceed to adapt the radiators, feed lines, and power supply to this unconventional layout, narrating each adjustment with practical tips, gripes about fitment, and creative problem solving, all while aiming for a positive pressure cooling loop. By the halfway point, the assembly expands to three radiators and the RX 6900 XT GPU, with a careful sequence of mounting, cable management, and bracket customization to squeeze everything into the metal shell. The video culminates in a pressure test and leak check, followed by a performance run that showcases surprisingly solid thermal results for such a compact system. The hosts reflect on lessons learned, such as airflow routing and potential improvements for future iterations, and celebrate the achievement while acknowledging the compromises involved. Throughout, the narrative balances technical detail with humor and a sense of awe at what can be accomplished in a tiny case, ending with encouragement to viewers who enjoy extreme builds and inventive cooling.
Topics · computing · hardware · pc_building · water_cooling · small_form_factor · case_design
Questions answered
- What CPU and GPU were used in the build and why were they chosen for this tiny ITX case?
- The build uses a Ryzen 9 5950X CPU and an RX 6900 XT GPU to maximize performance, with the intention of testing whether a quad-radiator water cooling setup in a very small Mini ITX case can handle high-end components.
- How did the team manage space constraints for multiple radiators and the power supply?
- They used a highly compact 850W SFX Gold power supply, custom mounting brackets, and creative routing including using radiators as feet, cut brackets, and precise fittings to fit four radiators inside a 80 mini ITX form factor while maintaining airflow.
- Were there any notable tricks or hacks to make the cooling loop work in such a tight space?
- Yes, the build involved a mix of unconventional mounting, using the radiators as feet, non-standard tubing angles, a quick-release for the loop, and strategic top and bottom radiator intake configuration to achieve positive pressure.
- What were the thermal results and were there any leaks during testing?
- The testing showed CPU temperatures around the mid to high 70s Celsius on the die under heavy load and GPU around 60C, indicating effective cooling for a compact setup, with no leak issues during the test phase after ensuring the loop was bled.
- What lessons did the builders take away for future iterations?
- They noted airflow direction improvements, potential better cooling with revised intake/exhaust placement, and the importance of planning around tight tolerances, while acknowledging that some compromises were necessary to achieve the final result.