5 GHz and 2.4 GHz is the name of the channels that Dual band WiFi routers provide. The 5 GHz channel provides a more powerful connection and faster internet speed, but it is limited to a short distance of usually 15 meters. On the other hand, the 2.4 GHz channel covers a wider area and is perfect for a standard house. But it provides a lesser bandwidth than the 5 Ghz Connections. WiFi routers are now usually equipped with both channels so you can easily switch between them for desired results.