Netgear R8000 User Manual - Page 56
Total bandwidth: 640 Mbps, Dual-band WiFi network with one 5 GHz WiFi band, GHz WiFi Band
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Nighthawk X6 AC3200 Tri-Band WiFi Router iPhone 5S with support for only single-stream 802.11n can achieve a maximum WiFi speed of only 150 Mbps. As more devices connect and begin downloading, the bandwidth is shared among them as well. The following example of shared bandwidth shows a dual-band router in which the GHz WiFi band has a fast 640 Mbps capacity. If only one computer or device connects, the router can allocate a speed of up to 640 Mbps to that connection, assuming that the device is capable of that speed. When more devices connect to the 5 GHz band, they must share the bandwidth. If four devices connect, then the router divides its 640 Mbps capacity by 5, as shown in the following figure. 5 GHz WiFi Band Internet 5 GHz Fast MacBook Pro 300 Mbps ÷ 5 MacBook Pro 1300 Mbps ÷ 5 Other router Total bandwidth: 640 Mbps (150 + 300 + 150 + 1300 + 1300) ÷ 5 iPhone 150 Mbps ÷ 5 iPad 300 Mbps ÷ 5 iPhone 50 Mbps ÷ 5 Figure 7. Dual-band WiFi network with one 5 GHz WiFi band That means that in the network shown, a computer with a 1,300 Mbps capacity has an effective WiFi connection speed of 160 Mbps (1300 5), and other devices would also see their WiFi speeds divided by 5. Tri-band WiFi adds a second 5 GHz WiFi band to the network. This increases the available WiFi bandwidth, which can be compared to widening the road. In addition to widening the road, having two 5 GHz bands means that the router has dedicated 5 GHz bands. That's like Tri-Band WiFi Connections 56