This Tiny Gaming Cube Runs RDR2 at 105 FPS
A YouTuber has just proven that size means absolutely nothing in modern PC gaming. The channel ITG Gear recently revealed the ITG Cube, a custom-built gaming PC that looks like a modern take on Valve’s old Steam Machine concept but delivers performance that comfortably handles today’s AAA titles.
The ITG Cube is a compact gaming system shaped like a perfect cube, measuring only 165 mm on each side. Despite its tiny footprint, this machine is capable of running demanding games like Red Dead Redemption 2 at an average of 105 FPS, a number that would embarrass many full-sized gaming desktops from just a few years ago.
At the core of the build is the Aoostar GEM12 MAX Mini PC, powered by an AMD Ryzen 7 8745HS processor paired with integrated Radeon 780M graphics. On its own, the Mini PC is already competent, but the real magic happens through an external GPU connection. The creator connected an HP RTX 4060 Low Profile graphics card via an OCuLink port, a high-bandwidth interface that significantly outperforms traditional USB4 or Thunderbolt solutions. This allows the external GPU to operate with minimal bottleneck, unlocking near-desktop-level performance.
The entire enclosure was designed from scratch and 3D-printed using heat-resistant ASA material. The cube is split into two main sections, making assembly surprisingly straightforward. Inside, a custom rail system allows the Mini PC and the eGPU interface to slide into place without complex mounting hardware. Cooling is handled by a single 120 mm fan mounted at the top, powered via USB, which keeps the system impressively cool and quiet even during long gaming sessions.
Performance numbers are where the ITG Cube truly shines. At 1200p resolution with a mix of High and Ultra settings, Red Dead Redemption 2 averaged 105 FPS. Other modern titles performed just as well, with God of War Ragnarök hovering around 100 FPS and Cyberpunk 2077 averaging close to 95 FPS. Thermals remained under control throughout testing, with CPU temperatures around 59°C and GPU temperatures peaking at roughly 74°C, excellent results for such a compact system.
Beyond raw performance, this project highlights the growing importance of OCuLink in the PC hardware space. In 2026, OCuLink is rapidly becoming the preferred option for external GPU setups, offering higher bandwidth and lower latency than older standards. The ITG Cube demonstrates just how viable Mini PCs can be when paired with the right external hardware.
This project is not intended as a commercial product. Instead, it serves as a learning reference for DIY enthusiasts and hardware modders. The creator has shared full build details and 3D printing files in the project’s video, making it accessible to anyone interested in recreating or improving upon the design. The total cost of the main components comes in at roughly 600–700 USD, excluding 3D printing materials, making it a surprisingly cost-effective route to high-end gaming in an ultra-compact form factor.
The ITG Cube stands as a clear signal of where PC gaming is heading. Compact systems, modular upgrades, and smarter connectivity are redefining what a “gaming PC” can look like. For anyone who ever liked the idea of Steam Machine but felt it arrived too early, this tiny cube feels like the concept finally done right.
Origin: Notebookcheck
