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Wireless Reviews

Routing Performance

Routing performance for the DIR-665 using our standard test method is summarized in Table 1. I threw in the TEW-691GR's results for ease of comparison. Figure 6 shows the composite IxChariot plot for the three routing speed tests. Note that tests were done with the upstream auto QoS feature disabled (it's enabled by default).

Test Description DIR-665
Throughput - (Mbps)
TEW-691GR
Throughput - (Mbps)
WAN - LAN
377
262
LAN - WAN
420
314
Total Simultaneous
364
286
Maximum Simultaneous Connections 16,186 14,983
Firmware Version
1.00NA
1.0.0.0
Table 1: Routing throughput

Routing speed is fairly steady and almost 100 Mbps faster than the TRENDnet. But unless you've got extremely fast Internet service, the difference won't provide any real benefit.

D-Link DIR-665 routing throughput
Click to enlarge image

Figure 6: D-Link DIR-665 routing throughput

The Maximum Simultaneous Session test topped out at 16,186 sessions. Since this isn't near a binary multiple boundary, I didn't round the result.

Use the Router Charts to see how the DIR-665 stacks up against other routers.

Wireless Performance - Two Stream

Updated 8/10/2010: Six location test results can be found here using a two-stream client.

I won't be doing my full set of six location wireless performance tests on three-stream routers until I get my test client situation sorted. More on this shortly. So for the initial tests, I used our standard open air test method to test wireless performance with the standard wireless test client, an Intel Wi-Fi Link 5300 AGN mini-PCIe card in a Dell Mini 12 running WinXP Home SP3 and version 13.1.1.1 of the Intel drivers. I left all client-side defaults in place.

I ran tests in 20 and 40 MHz channel modes up and downlink in both 2.4 and 5 GHz bands. All tests were done in "Location A", i.e. my office with router and client about 10 feet apart. No other wireless traffic was active during the tests. I set the router to Channel 1 for 2.4 GHz and Channel 36 for 5 GHz with no wireless security enabled for any of the tests.

Figure 7 shows a composite IxChariot plot of all downlink tests for both bands and both 20 and Auto 20/40 MHz channel bandwidth modes. I grouped the plots this way so that you can easily see the differences between bands and channel modes.

D-Link DIR-665 wireless throughput summary - downlink, dual-stream client
Click to enlarge image

Figure 7: D-Link DIR-665 wireless throughput summary - downlink, dual-stream client

As I found with the TEW-691GR, throughput variation is extremely high, with best case average throughput just shy of 90 Mbps (2.4 GHz, 40 MHz mode). And, again, this is nothing to write home about, since there are five dual-stream routers on the wireless charts that have best-case 40 MHz mode throughput of 90 Mbps or higher.

Figure 8 shows uplink results, which achieved a higher high of 95 Mbps (5 GHz, 40 MHz mode). Once again, not unprecedented in my testing, but less common, with only two products turning in higher best-case results (Apple Airport Extreme and D-Link DIR-825 B1).

D-Link DIR-665 wireless throughput summary - uplink, dual-stream client
Click to enlarge image

Figure 8: D-Link DIR-665 wireless throughput summary - uplink, dual-stream client

I also ran simultaneous up and downlink tests to see if using more streams yielded higher total throughput. The highest result here was 110 Mbps (2.4 GHz, 40 MHz mode). You can check out the IxChariot plots (2.4 GHz/20 MHz, 2.4 GHz/40 MHz, 5 GHz/20 Mhz, 5 GHz/40 MHz).

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