It's probably the stupidest option available, though, as it's never going to be as fast as a built-in chip, and if the OP doesn't need the laptop to be moveable, then a desktop would be a bettre choice because of the price difference.
OS: Windows 10 64 bit Professional
CPU: AMD Ryzen 5900X
RAM: 48GB
GPU: Radeon 7800 XT
CPU: AMD Ryzen 5900X
RAM: 48GB
GPU: Radeon 7800 XT