N600 routers are the first true dual-band routers on the market, capable of delivering 300Mbps Wi-Fi speed -- based on the dual-stream (or 2-by-2) setup of the 802.11n Wi-Fi standard -- simultaneously on its two frequency bands, 2.4GHz and 5GHz. The marketing term "N600" basically means "Wireless-N standard with a combined bandwidth of 600Mbps."
In layman's terms, an N600 router comes with two built-in Wireless-N access points. Wireless clients connected to one of these access points (a client can only connect to one access point at a time) will have a ceiling speed of up to 300Mbps. In reality, the real-world sustained speeds of wireless routers vary a great deal, depending on the environment, distances between router and clients, and the frequency band.
In my experience, N600 routers generally offer about 60Mbps on the 2.4GHz band and about 140Mbps on the 5GHz band, within 75 feet or less. And while these seem much lower than the 300Mbps ceiling speed, they are more than fast enough for most applications, including high-definition media streaming. In fact, 140Mbps is about 50 percent faster than a wired Ethernet connection. Farther out, from 150 feet or more, a Wi-Fi connection is generally only good for accessing the Internet and mild networking needs. You can find out more about the basics of home networking here.
Since the dual stream is currently the most popular standard of Wi-Fi used in clients, getting an N600 router is probably the best value for your money. This is because the speed of a network connection is determined by the slowest speed of any party involved, so if you get a faster Wi-Fi router (such as an N900 router), you might not see any benefits at all if none of your clients support the higher tiers of Wi-Fi speeds.
Below are the top five N600 routers among those I have reviewed in recent years.… Read more