When we took a look at Bigfoot's Killer Wireless NIC we had an opportunity to play with Cisco's E4200, a top of the line wireless router with 3x3 spatial streams and 450 Mbps performance in both the 2.4 GHz and 5 GHz bands. Not content with having one of the best routers available they decided to push the envelope a little further. The Cisco E4200 v2 Maximum Performance Dual-Band N900 includes an upgraded 1.2 GHz processor, designed to improve USB throughput when a disk is attached. Though we didn't test it with our sample, this is apparently a deficit in the original E4200, whose BCM4718 was clocked at 480 MHz. There's also been some optimizations to the antenna and amplifier configuration that should improve...

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