Not sure what you mean. If you were to try to use both the wifi and the ethrenet at the same time it will prefer the ethernet on almost all machines.
If you mean the name of the network, I am unsure why windows does that stupid stuff. It is purely a name and has nothing to do with the speed or how it is connected. If you are using the ethernet cable it will run at 1gbit speed or 100mbps if you have a router that does not have gbit lan ports.