I am currently looking at eGPUs for my laptop (HP Spectre x360 15"). Because the standard power brick is rated for 150W, the USB-C standard would only provide 2/3 of the required power, so even an eGPU that can deliver 100W over the USB-C/Thunderbolt connection would be inadequate.
One eGPU (the AkiTiO Node Pro) offers two USB-C/Thunderbolt ports that can supply 60W each. My laptop has two USB-C/Thunderbolt ports, both of which can be used for charging. If I were to connect both ports on the laptop and eGPU, could I deliver 120W to my laptop, or am I still limited to 100W?
I am guessing this depends on the number of USB controllers present since each should (likely) allow for 100W, so having two would mean a theoretical limit of 200W while one would limit me to 100W.