This 3D-printed ‘Steam Machine’-style cube with an AMD mini PC runs Red Dead Redemption 2 at 105 FPS via an OCuLink eGPU
YouTube channel ITG Gear has showcased a compact, 3D-printed gaming enclosure that reimagines the Steam Machine concept using modern mini PC hardware and an external GPU connection.
Dubbed the “ITG Cube,” the project by the modder is built around a cube-shaped enclosure designed to house an Aoostar GEM12 MAX mini PC powered by an AMD Ryzen 7 8745HS with a Radeon 780M iGPU, currently selling on Amazon for $289, along with a dedicated cooling solution, a low-profile single-fan HP RTX 4060 available on eBay for $239.95, and an OCuLink-based eGPU dock, all within a compact 165 × 165 × 165 mm footprint.
Rather than relying on USB4 or Thunderbolt, the creator opted for OCuLink to unlock higher bandwidth between the mini PC and a discrete graphics card. The enclosure itself is fully 3D printed and split into just two main parts, making it relatively straightforward to assemble.
The modder says that the case was printed using heat-resistant ASA filament and designed with integrated rails, allowing the mini PC, GPU dock, and cooling hardware to slide into place without complex mounting hardware.
Cooling is handled by a large 120 mm top-mounted fan. While the fan is powered via USB rather than full PWM control, the creator notes that it remains quiet while keeping temperatures in check during extended gaming sessions. Power and cable management are also kept minimal, with the eGPU synchronizing power states directly with the mini PC.
In gaming benchmarks shown in the video, the setup delivers desktop-like performance at 1200p, including an average of 105 FPS in Red Dead Redemption 2 using a mix of high and ultra settings. During gameplay, on-screen monitoring shows the CPU operating at around 59 °C, while the RTX 4060 GPU remains at roughly 74 °C.
The modder also tested God of War Ragnarök, which ran at around 100 FPS, Doom: The Dark Ages, which achieved between 75 and 90 FPS, and Cyberpunk 2077, which averaged approximately 95 FPS under similar conditions.
The video positions the ITG Cube as a proof of concept aimed at the DIY and enthusiast community rather than a commercial product. The full build process and design files are detailed in the complete video.
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