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Wireless Performance - Comparative

The Throughput vs. Attenuation plots provide better insight into comparative performance than the simple average benchmarks. I chose to compare the C7 with two other top-ranking, but both Broadcom-based AC1750 class routers, the ASUS RT-AC66U and D-Link DIR-868L.

The 2.4 GHz downlink comparison below shows the C7 with steady throughput in the high to mid signal levels, with no dip in the early going like the ASUS. But the C7's throughput starts to fall after only 24 dB of attenuation while both the other routers don't begin their fall until after 33 dB. The C7s decline is gentle at first, but then matches the slope of the ASUS and D-Link after 42 dB.

2.4 GHz Downlink Throughput vs. Attenuation

2.4 GHz Downlink Throughput vs. Attenuation

The 2.4 GHz uplink plot shows the C7 significantly outperforming the other two products until 27 dB. It then barely manages to stay above the D-Link, which starts its decline even earlier at only 21 dB of attenuation. The ASUS comes out the best in this comparison, keeping its steady throughput until after 39 dB.

2.4 GHz Uplink Throughput vs. Attenuation

2.4 GHz Uplink Throughput vs. Attenuation

The 5 GHz results show that Broadcom isn't the only chipset that can produce good 5 GHz range. The downlink plot below shows that the C7 isn't the fastest out of the gate. But its throughput remains high while the D-Link and ASUS start to fall. After 27 dB of attenuation, however, the C7 and ASUS start to look pretty much the same.

5 GHz Downlink Throughput vs. Attenuation

5 GHz Downlink Throughput vs. Attenuation

5 GHz uplink range is tilted more in the C7's favor, even if its 0 dB throughput, which is used for Performance ranking, is the lowest of the three products. The C7's throughput remains steady until the 27 dB point, which allows it to remain above the other two products on its downward slope.

5 GHz Uplink Throughput vs. Attenuation

5 GHz Uplink Throughput vs. Attenuation

Note the 105 Mbps of throughput measured at the 45 dB maximum attenuation! This is the highest value measured to date and 37 Mbps higher than the next highest ASUS RT-AC66U.

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