Thunderbolt 3 External Gpu. An enclosure to house it in. But the show really begins once a GPU is added and the box is connected to a laptop.
An external graphics card enclosure (eGPU) is a must-have if you have a laptop or Macbook. External graphics card adapter or external GPU enclosure is an ever-developing solution for laptop users who need more power (than integrated graphics) for gaming, AR/VR development, AI/machine learning, and many other high demand. However, the entire external GPU assembly doesn't work at all in macOS unless you start modifying the operating system itself.
These come with a graphics card pre-installed.
Some considerations are power consumption, card size, GPU memory, and clock.
An external graphics card enclosure (eGPU) is a must-have if you have a laptop or Macbook. Your choice of GPU depends on your use case and choice of enclosure. However, the entire external GPU assembly doesn't work at all in macOS unless you start modifying the operating system itself.