Even though it says that it supports more than 1gb data transfer, do not get fooled by it. This is not a Gigabit WiFi router. The Ethernet port on the back only supports a maximum speed of 100mbps. So even though it claims to support more than 1gbps speed, you will never get speed of more than 100mbps, and the wifi standard 801ac is completely wanted on this product.
Also point to note here, the range even in 2.4ghz isn't that great.