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Wireless Reviews

Wireless Performance - Competitive Comparison

Since I tested the 855 using the Azimuth method, I can't directly compare it with the DIR-825. Fortunately, I did open-air test the current concurrent Draft 11n dual-band sales leader—Linksys' WRT610N. To provide some lower-cost single-radio dual-band alternatives, I threw the D-Link DIR-628 and DAP-1522 AP/Bridge into the comparison.

Figure 13 has the Wireless Chart comparison for 2.4 GHz, 20 MHz bandwidth average downlink throughput for this roundup of products. What's clear is that there is no consistent winner in all locations. As I was preparing the other screen captures from the Wireless Charts, I kept seeing the same thing;no clear winner in all locations.

Competitive comparison - 2.4 GHz, 20 MHz channel, downlink

Figure 13: Competitive comparison - 2.4 GHz, 20 MHz channel, downlink

So instead of presenting all the plots and having you go crazy trying to make sense of them, I have tried a different approach. Table 1 summarizes the highest downlink throughput product in each location for the four combinations of bands and modes tested.

All I did was go through each chart and put an X in the product's box that had the highest throughput for each test. So all you have to do is add up the checkmarks for each product!

You can easily see that there is no consistently best product for downlink performance! But the dual-band single-radio DIR-628 and DAP-1522 seem to do better than the 825.

Product 2.4GHz /20 2.4GHz / 40 5GHz / 20 5GHz / 40
A B C D E F A B C D E F A B C D E F A B C D E F
Linksys WRT610N   X             X                   X          
D-Link DIR-825 X           X                                  
D-Link DIR-628     X X   X       X   X     X X           X    
D-Link DAP-1522         X     X     X   X X           X X      
Table 1: Best downlink throughput summary

Table 2 contains a similar summary, but for the uplink tests. It's clear that the WRT610N outshines the other products in the 2.4 GHz band. But not so much for 5 GHz.

Product 2.4GHz /20 2.4GHz / 40 5GHz / 20 5GHz / 40
A B C D E F A B C D E F A B C D E F A B C D E F
Linksys WRT610N X X X X X     X X X X   X           X X        
D-Link DIR-825             X               X X         X      
D-Link DIR-628           X               X   X           X    
D-Link DAP-1522                                                
Table 2: Best uplink throughput summary

If you want to see the other Wireless Chart plots, just click on the links below.

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