I want to build a small external GPU with integrated power supply. It'll be based on the ADT-Link R43ML, which is a PCIE to M.2 extender, and the Jeyi ThunderDock, a Thunderbolt 3 to M.2/NVMe case. The GPU I will use is a PNY GTX 1660 Super, which draws 125W, but I'd like to leave a bit of...