https://wccftech.com/alienware-concept-polaris-is-an-external-gpu-enclosure-that-can-house-up-to-16-inch-graphics-cards-comes-with-built-in-liquid-cooling/

While Concept Nyx takes the household gaming experience to the next level, Alienware's Concept Polaris aims to turn portable gaming solutions into enthusiast-tier machines.

In 2014, Alienware introduced its Graphics Amplifier, an external GPU solution that could house up to 10.5-inch graphics cards, and came with an internal PSU. Since then, there have been many eGPU options in the market such as the Razer Core X (13-inch support), AORUS RTX 3080 gaming box (6.65-inch support), and CoolerMaster MasterCase EG200 (12.79-inch support).