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Throughput vs. Path Loss - Product Comparison

So how does the 600N compare to the other dual-band options available? Pickin's are still slim for dual-band, but we can compare the 600n to the Apple Airport Extreme (Atheros XSPAN) and Buffalo WZR-AG300NH dual-band (Marvell Topdog). Since you can use the Wireless Charts to generate the plots you want, I'm going to show only comparisons using 20 MHz channel mode in 2.4 GHz and 40 MHz channel mode in 5 GHz, since those are the defaults.

Figure 23 shows the 600N having the highest throughput under 2.4 GHz downlink strong-signal conditions, but then falling below the Apple Airport Extreme as path loss increases.

Throughput vs. Path Loss product comparison - 2.4 GHz downlink
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Figure 23: Throughput vs. Path Loss product comparison - 2.4 GHz downlink

Uplink in 2.4 GHz with 20 MHz channel (Figure 24) shows a similar pattern, but this time the 600N's throughput falls below both the Apple and Buffalo products as signals grow weaker.

Throughput vs. Path Loss product comparison - 2.4 GHz uplink
Click to enlarge image

Figure 24: Throughput vs. Path Loss product comparison - 2.4 GHz uplink

In the 5 GHz plots, the Apple Airport Extreme is running at a disadvantage, since it was not tested with an Atheros-based client. And it's hard to say whether the Buffalo dual-band or 600N is superior, since they trade positions multiple times over the curve.

Throughput vs. Path Loss product comparison - 5 GHz downlink
Click to enlarge image

Figure 25: Throughput vs. Path Loss product comparison - 5 GHz downlink

But with 5 GHz / 40 MHz channel uplink (Figure 26), the 600N appears to be the better choice than the Buffalo. But even though the Apple's throughput is lower (most likely due to the mismatched client), it has the same range as the 600N.

Throughput vs. Path Loss product comparison - 5 GHz uplink
Click to enlarge image

Figure 26: Throughput vs. Path Loss product comparison - 5 GHz downlink

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