Like every other website on the planet, SmallNetBuilder uses cookies. Our cookies track login status, but we only allow admins to log in anyway, so those don't apply to you. Any other cookies you pick up during your visit come from advertisers, which we don't control.
If you continue to use the site, you agree to tolerate our use of cookies. Thank you!

Router Charts

Click for Router Charts

Mesh Charts

Click for Mesh Charts

Wireless Performance

I used the open air test method described here to test the 400N's wireless performance. Testing was done using the new SNB standard wireless test client, an Intel Wi-Fi Link 5300 AGN mini-PCIe card and driver in a Dell Mini 12 running WinXP Home SP3. I left all client-side defaults in place except for enabling throughput enhancement (packet bursting).

The router had the latest 1.0.01 B19 firmware and I left all factory default settings in place, except to set channel 1 for the 2.4 GHz mode tests and channel 36 for the 5 GHz tests.

Figure 6 shows a composite of downlink throughput tests made at the six test locations in four wireless modes: 2.4 GHz, 20 MHz channel; 2.4 GHz, 40 MHz channel; 5 GHz, 20 MHz channel; and 5 GHz, 40 MHz channel. Each column represents the average throughput from a one minute test. Best case downlink throughput of 65.7 Mbps was measured using a 40 MHz channel in the 5 GHz band.

WRT400N six location downlink summary

Figure 6: WRT400N six location downlink summary

As usual, I wasn't able to connect to the 400N in Locations E and F in 5 GHz using either a 20 or 40 MHz channel. But speeds on the 2.4 GHz band were actually pretty good in Location E and usable in Location F.

Figure 7 shows a composite of the actual IxChariot test results running downlink 2.4 GHz w/ 20 MHz channel. Throughput variation is better than most other draft 11n products that I have seen and much better than the WRT610N's (see the plot). I can't say for sure why the variation is lower since I used different test clients.

Six location wireless throughput - 2.4 GHz, 20 MHz channel, downlink
Click to enlarge image

Figure 7: Six location wireless throughput - 2.4 GHz, 20 MHz channel, downlink

Figure 8 shows the six location plot for the uplink direction. Best case uplink throughput of 68.4 Mbps was measured using a 40 MHz channel in the 5 GHz band at Location A. Up and downlink speeds were generally evenly matched, except for a big difference in Location A, 2.4 GHz, 40 MHz mode. (See Figure 6 for the table of throughput values.)

WRT400N six location uplink summary

Figure 8: WRT400N six location uplink summary

The IxChariot uplink plot looks very similar to the downlink. You can see it here if you want.

Support Us!

If you like what we do and want to thank us, just buy something on Amazon. We'll get a small commission on anything you buy. Thanks!

Don't Miss These

  • 1
  • 2