I am a little bit confused with the built-in Ethernet and ENC28 Ethernet on the G400D module (just the module). Are they the same? or they are different hardware with noticeable performance differences? Which one has better performance and is recommended to use?
I would assume that the G400D built-in ethernet has higher theoretical performance, but I don’t have hard data to back that up. In the real world, however, your throughput will likely be limited by the NETMF interpreter long before those kinds of considerations come into play.