Compare 802.11n VS 802.11ac

802.11n use both 2.4Ghz and 5Ghz while 802.11ac only use 5Ghz service band. 802.11n support 100 to 600 Mbps while 802.11ac support 433Mbps to 6.93Gbps.The channel bandwidth of 802.11n is 40Mhz and can be fall back to 20Mhz in case of interference, while the channel bandwidth of 802.11ac is 80Mhz and 160Mhz. In 5Ghz service band, 802.11n can have 20 ~25 20Mhz channels while 802.11ac can have 4 ~6 80Mhz or 1~2 160Mhz channels. The maximum spatial streams in 802.11n are 4 while, the maximum spatial streams in 802.11ac is 8. Multiuser MIMO is not possible in 802.11n while it is possible with 802.11ac.