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

Router Ranker

Click for Router Ranker

NAS Charts

Click for NAS Charts

NAS Ranker

Click for NAS Ranker

More Tools

Click for More Tools

Wireless Reviews

Wireless Performance

Test and analysis by Tim Higgins

Testing the Extreme's wireless performance presented some unique challenges. While Ixia has a MacOS endpoint for IxChariot, it is PowerPC and not Intel-based. So I chose to install BootCamp on the top-of-the-line black MacBook that Apple sent along with the Extreme and loaded a copy of XP Pro SP2. (I actually ended up running some quick throughput tests using the PowerPC IxChariot endpoint, which seemed to produce results similar to those produced by XP.)

The router already had the latest 7.2.1 firmware and I left all factory default settings in place, except as noted.

Maximum Throughput - 2.4 GHz

To start, I ran some close range open-air IxChariot tests to look at maximum performance and throughput variation. This also provides baselines to check the Azimuth results against. As with the routing section tests, I ran all open-air wireless tests with Win XP SP2 running via BootCamp in the MacBook.

Testing was done with the router and MacBook about 10 feet apart in open air sitting in my lab with no other networks in range.

Figure 22 shows simultaneous up and downlink results in the default 2.4 GHz mode (b/g compatible), which come in at around 86 Mbps of total throughput. Running up and downlink separately yielded results of 78 and 66 Mbps respectively.

Up and downlink throughput - 2.4 GHz band, 20 MHz bandwidth
Click to enlarge image

Figure 22: Up and downlink throughput - 2.4 GHz band, 20 MHz bandwidth

Since Apple has chosen to lock out 40 MHz bandwidth (channel bonded) operation in the 2.4 GHz band, I couldn't test that mode. But I did check the "n only" mode and saw little performance difference.

Maximum Throughput - 5 GHz

I next checked throughput in the 5 GHz band. In this band, Apple defaults to using the 40 MHz bandwidth and "11a compatible" modes, so that's what you see in Figure 23. The total throughput of 124 Mbps is pretty impressive and better than the 103 Mbps of total up/down throughput turned in by the only other dual-band draft 11n router now available, the Buffalo WZR-AG300NH. I should note, however, that this superior performance was not reproduced in the Azimuth-based throughput vs. path loss testing. More on this shortly.

Up and downlink throughput - 5 GHz band, 40 MHz bandwidth
Click to enlarge image

Figure 23: Up and downlink throughput - 5 GHz band, 40 MHz bandwidth

More Wireless

Wi-Fi System Tools
Check out our Wi-Fi System Charts, Ranker and Finder!

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!

Over In The Forums

Hi, do you think that it would be possible to change the format of the DDNS page so that the user can input their own server details instead of having...
Hi all,My 2.4GHz wifi keeps dropping sometime in minutes of rebooting the router. The longest time it was up was 6hrs. When it goes down, there's alwa...
I just updated to firmware 384.13 and I lost all of my DHCP reservations that I had set up.I tried setting up again, but any time I reboot the router,...
If I set the setting "Wireless Mode" on the wireless adapter to "IEEE802.11ac Only", it does not see my network. It sees it if I set Wireless Mode to ...
[Release] Asuswrt-Merlin 384.13 is now available

Don't Miss These

  • 1
  • 2
  • 3