Wireless Performance Overview
The DIR-827 is Wi-Fi Certified, but both bands defaulted to Auto 20/40 Channel Width upon power-up. So if you're going to use the 2.4 GHz band in an area with lots of networks, be sure to set the Channel Width to 20 MHz to avoid spectrum-hogging.
I successfully ran a Wi-Fi Protected Setup (WPS) session with a Win 7 client by entering the WPS code found on the router's bottom label. The WPS session completed quickly and resulted in a WPA2/AES secured connection with the same WPA2 pre-shared key set for both radios. All tests were run with this secured connection using our current wireless test process.
One important note is that when I entered a network name (SSID) as prompted by the Windows WPS wizard, both radios were set to the same SSID! This isn't much help if you have dual-band clients, so you'll have to go back and manually set each radio to a unique SSID so that you can select the band you connect to. The router comes with dlink set for the 2.4 GHz SSID and dlink_media for 5 GHz.
I ran a 2.4 GHz Wireless Performance table for the 827 and their most likely competitors, the NETGEAR WNDR3800 and Cisco Linksys E3200. I also included the DIR-657, even though it is single-band, so that you can see how much better the 827 is.
The 827 handily beats the 657 in all test locations except the lowest-signal location F. Even though both D-Links use Qualcomm Atheros radios, the 827 is simply a better performer.
Wireless Performance comparison - 2.4 GHz
The throughput vs. location plots below make it easier to see the differences among the routers.
Throughput vs. location - 2.4 GHz
Throughput stability was generally good with only occaisional deep dropouts observed. As noted above, however, throughput in the lowest signal test location F was very low and I had to start some IxChariot tests multiple times before they would run. Even though it is better than the DIR-657 with strong to medium signals, the 827 is not a router you'd choose if you are trying to stretch your wireless coverage.
D-Link DIR-827 IxChariot plot - 2.4 GHz, 20 MHz, downlink
The highest throughput with a single test stream of 80 Mbps was obtained in Location A, downlink in Auto 20/40 mode. Running simultaneous up and downlink tests squeezed out higher throughput, 82 Mbps in 20 MHz mode and 118 Mbps in Auto 20/40.
Here are links to the other plots if you'd like to check them out.
- 2.4 GHz / 20 MHz uplink
- 2.4 GHz / 20 MHz up and downlink
- 2.4 GHz / 40 MHz downlink
- 2.4 GHz / 40 MHz uplink
- 2.4 GHz / 40 MHz up and downlink