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

I used the open air test method to test the 825's wireless performance. Testing was done using a D-Link DWA-160 B1 USB adapter inserted into a Fujitsu P7120 Lifebook (1.2 GHz Intel Pentium M, 504 MB) notebook running WinXP Pro SP2 with all the latest updates. I used the latest Win XP SP2 1.02.01.0000 driver and D-Link V2.1 client utility during testing. The router had the latest 1.01 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 9 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.

You can see best-case (Location A) throughput is 94 Mbps using a 40 MHz channel in the 2.4 GHz band. This is significantly better than the 68 Mbps 855 did for the same test. But keep in mind that I used different client adapters, although the NETGEAR WNDA3100 I used with the 855 is Atheros based.

DIR-825 six location downlink summary

Figure 9: DIR-825 six location downlink summary

Like most dual-band products that I've open-air tested so far, the client wasn't able to even see the 825 in test Locations E and F when using the 5 GHz band. The connection was also iffy in Location D using 20 MHz mode, averaging only around 4 Mbps.

In the 2.4 GHz band in the 40 MHz bandwidth mode, the DWA-160 could see the 825 and connect, but not reliably pass traffic in Locations E and F. In the 20 MHz mode, the client could still see the 825, but connection was very iffy at Location F.

Figure 10 shows a composite of the IxChariot test results running downlink 2.4 GHz w/ 20 MHz channel. There are plenty of 50% drops in throughput, which would not deliver trouble-free high-def video streaming.

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

Figure 6: Six location wireless throughput - 2.4 GHz, 20 MHz channel, downlink

Figure 11 shows the six location plots in the uplink direction. Performance was very similar to downlink, with best-case throughput of 83 Mbps again measured at Location A using a 40 MHz channel in the 2.4 GHz band. Unfortunately, uplink was also essentially unusable in locations E and F. Throughput variation actually was lower running uplink, however, as you can see in this plot.

DIR-825 six location uplink summary

Figure 11: DIR-825 six location uplink summary

Wireless Security Performance

I also tested for throughput reduction with wireless security set to WEP, WPA/TKIP and WPA2/AES and found the usual penalty in WEP and WPA/TKIP—about 70% in this case (Figure 12). The difference between the results for no encryption and WPA2/AES is basically due to high throughput variation.

Security mode comparison - 2.4 GHz, 20 MHz channel, downlink
Click to enlarge image

Figure 12: Security mode comparison - 2.4 GHz, 20 MHz channel, downlink

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

Continuation ofhttps://www.snbforums.com/threads/custom-firmware-build-for-orbi-rbk50-v-2-5-0-42sf-hw.60308/. . .https://www.snbforums.com/threads/c.....
Hi,I've finally gotten around to restoring my AC-RT86U to factory defaults (since upgrading to Merlin) and i'm now attempting to clear the jffs partit...
On Merlin firmware, when selecting the Bandwidth Limiter option for QoS both the "Queue Discipline" and "WAN packet overhead" options are presentAre t...
Hi,I have the following working configuration on my router:Dual WAN2x openvpn clientWithout resorting to policy-based routing on router side, is there...
Is there any chance there will be a firmware version for the ASUS XT8 models?

Don't Miss These

  • 1
  • 2
  • 3