The link will be whatever the fastest network port you can get on an apple machine is. Its not 200Gbps - the apple end will be the limiting factor. A single core can probably fill that just fine.
And being pedantic - 200Gbps links are not a significant percentage of installed network ports in the computers in the world... so "almost any" is pretty accurate.
In context of time machine backups...
The link will be whatever the fastest network port you can get on an apple machine is. Its not 200Gbps - the apple end will be the limiting factor. A single core can probably fill that just fine.
And being pedantic - 200Gbps links are not a significant percentage of installed network ports in the computers in the world... so "almost any" is pretty accurate.