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 Security

Next check was to see if enabling WEP caused any throughput degradation. I ran a Condition 1 (best case) test with 128 bit WEP enabled and disabled and found an decrease in average throughput of only 4%, which I consider to be within the bounds of my measurement accuracy. This is basically what I expected, since the TI chipset includes a hardware encryption co-processor to handle the tougher encryption that will be required in WPA2. The feature also ensures that enabling WEP has negligible effect on throughput.

Turbo mode

Although I knew that USR's 11g line wouldn't come anywhere near TI's over-hyped 100Mbps number, I ran a good number of tests to determine exactly how much TI's "802.11g+" / "packet aggregation" technology improved throughput. Figure 8 shows a comparison of the following tests run with a USR5410 card:

  • AP default (Dot11mode = mixed, 4x mode = Enable)
  • 4x mode disabled
  • Dot11mode = G only and 4x mode disabled.

USR5450: "4X" effect comparison

Figure 8: "4X" effect comparison - USR5410 client
(click on the image for a full-sized view)

See any difference? Me neither. But I did find that enabling 4x mode helped throughput for TI-based 802.11b+ clients, as Figure 9 illustrates.

"4X" effect comparison - D-Link DWL-650+ "802.11b+" client

Figure 9: "4X" effect comparison - D-Link DWL-650+ "802.11b+" client
(click on the image for a full-sized view)

Figure 9 contains three test runs and shows that I needed to disable "4x" mode on both AP and client in order to get the lower throughput.

Tip TIP: I found I had to completely uninstall my old driver and client utility for the D-Link card and do a fresh install of the latest ones that I downloaded from D-Link's support website. Otherwise I could get only about 600kbps throughput when I was occasionally able to connect to the AP.

802.11g Wireless Performance Test Results

Test Conditions


- WEP encryption: DISABLED
- Tx Rate: Automatic
- Power Save: Disabled
- Test Partner: USR5410 CardBus card

Firmware/Driver Versions

AP f/w:
1.18
Wireless client driver:
WinXP 4.0.40.3
Wireless client f/w:
No Info

Test Description SNR (dB) Transfer Rate (Mbps) Response Time (msec) UDP stream
Throughput (kbps) Lost data (%)
Client to AP - Condition 1 0 20.7
[No WEP]
19.9
[w/ WEP]
1 (avg)
2 (max)
499 0
Client to AP - Condition 2 0 20 1 (avg)
2 (max)
499 0
Client to AP - Condition 3 0 15.4 1 (avg)
4 (max)
499 0
Client to AP - Condition 4 0 12.8 2 (avg)
3 (max)
499 0
See details of how we test.

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

I can obviously ping the gateway from any device, but regardless of whether I turn on "guest" access to the share (or use username/pw), or try it with...
Hey guys; so obviously I can add my wifi printer to any particular SSID, but is there a way I can make it available to any device, regardless of which...
I run an OpenVPN client on my ASUS RT-AC86U with 384.10_2 firmware. Everything works fine except that whenever the VPN client disconnects (happens occ...
View attachment 17763why would a device be trying to access a private IP address from my network....View attachment 17764mysteriously here it is tryin...
I'm looking for a router that can:- support up to 150Mb/s- support both 2.4GHz and 5GHz- actively monitor network traffic on a per device basis- creat...

Don't Miss These

  • 1
  • 2
  • 3