
You don't need 802.11n speeds to check Facebook on your phone.

Put all your streamers on the faster 5GHz network and everything else on the slower 2.4Ghz network. To ensure as much data as possible is being pushed to your TV (or anything else that grabs video streams from the Internet), you can split the SSID to create two networks. These fancy routers push Wi-Fi on the 5GHz and 2.4GHz bands. If stringing wires throughout the house is out of the question and you absolutely, positively have to use Wi-Fi, do yourself a favor and invest in a simultaneous dual-band router. But, if you're streaming from a media center or iTunes, you'll want the fastest speed possible on your home network. Yes, that's way faster than your internet connection. Even the fancy new 802.11ac (which still hasn't been ratified) tops out at 866.7Mb per second.
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To get the best possible stream, run a Cat 5 - or, better yet, a Cat 6 - Ethernet cable to your streamer.
