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NOVEM­BER 2015 Of course, all that is in the­ory. To make sense of all this, we ran a test our­selves with the afore­men­tioned Linksys EA8500, an AC2600 router that sup­ports MU-MIMO. Also with us are two Acer As­pire E14 note­books, one of the ear­li­est adopters of MU-MIMO among note­books. We plugged in a USB flash drive con­tain­ing 4GB worth of video files to the router, and first copied it from the drive to one of the note­books. The process took two min­utes and 14 sec­onds, with data trans­fer av­er­ag­ing at 31MB/s.

We then re­peated the test, this time with both note­books. Trans­fer speeds took a dip here, go­ing down to an av­er­age of 23MB/s, with the file trans­fer com­pleted in three min­utes. We would at­tribute the drop in speed to pro­cess­ing bot­tle­necks on the router's end be­cause of one

With MU-MIMO, de­vices are each tak­ing one spa­tial stream of data, mean­ing there is less wait time caused by the turn-tak­ing of mul­ti­ple de­vices shar­ing all spa­tial streams.

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