the setup goes as follows: router would have a cat 6 connected to the gigabit switch, it would provide dhcp and a gateway, also wifi. my desktop and server would be connected with cat 6 to the gigabit switch. both would have gigabit cards. would i notice much of an increase in speed, compared to 100 mbps cat 5e? also, adding a switch to a router, in my config would work, correct?