How of many streams 802.11ac end 15 27 "5 K?

I'm trying to determine the fastest wireless access point, can I use it with my new 4 GHz quad core i7 iMac 5 K without overpaying.  My end of 2013 MacBook pro supports the flow of 3 x 3, so I had the RT - 68U ASUS, but I wonder how many streams are available in the new iMac.  I can't find this spec.  Thank you!

http://www.Apple.com/iMac/performance/

Wireless

Up to three times faster than Wi - Fi.

With three components technology 802.11ac, iMac takes office Wi - Fi at an unprecedented rate. Simply connect a 802.11ac - such as AirPort Extreme or Time Capsule airport - base station and to reach data rates of Gbps.3 up to 1.3 which is triple the previous 802.11n standard. You also get double the bandwidth of the channel, with scale of 80 MHz channels offering more room for data more than circulate more quickly than ever.

Tags: Mac

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