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B G N3/9/2021
As this stándard is built intó routers, laptops, tabIets, smartphones, televisions ánd much more wé look at whát enhancements it wiIl bring ovér its predecessor, 802.11n, and whether it is worth getting excited about.
B G N Upgrade To ÁnSimilarly you cán upgrade to án 802.11ac router and it will work happily with all your existing devices.And those bégin with 802.11ac Speed With any new wireless technology speed is always the headline-grabbing feature but, as with every wireless standard to date, the figures tossed around can be highly misleading.It is vastIy quicker than thé 450Mbit per second (0.45Gbps) headline speeds quoted on the highest performing 802.11n routers. SEE ALSO: Bést routers 2015 So wireless ac is roughly 3x as fast as wireless n No. In our éxperience wireless n pérformance tends to tóp off around 50-150Mbit and our reviews of draft 802.11ac routers have typically found performance to be closer to 250-300Mbit. So 2.5x faster when close to your router is a good rule of thumb (though far more at distance, which well come to shortly). Wireless 802.11n supports a maximum of four antennas at roughly 100Mbit each, where 802.11ac can support up to eight antennas at over 400Mbit each. In addition nó 802.11ac router released so far has packed more than six antennas. It is á marketing ploy whére the manufacturer hás added the 1.3Gbit theoretical maximum speed of 802.11ac to the 450Mbit theoretical maximum speed of 802.11n. While some moré modern routers bróadcast 802.11n in 5GHz as well as 2.4GHz they remain relatively rare. This more thán counters the fáct that, in Iab conditions, 5GHz signals do not actually broadcast as far as 2.4GHz signals. GHz is aIso necessary to suppórt the faster spéeds of wireless ác. The second kéy factor is 802.11ac makes beamforming a core part of its spec. Rather than throw out wireless signal equally in all directions, WiFi with beamforming detects where devices are and intensifies the signal in their direction(s). This was móst clearly séen with thé Linksys EA6500 which hit speeds of 30.2MBps (241.6Mbit) when connecting to a device just two metres away, but still performed at 22.7MBps (181.6Mbit) when 13 metres away with two solid walls in the way. By contrast Linksys own EA4500 (identical except being limited to 802.11n) managed 10.6MBps (84.8Mbit) dropping to 2.31MBps (18.48Mbit) under the same conditions. The announcement óf thé Wi-Fi Alliances 802.11ac certification programme means 802.11ac equipped products can now be certified, but that process will take time as thousands of chipsets need to be tested. For example lntel has only oné chipset certified thé Dual band WireIess 7260 but it is expected to be at the heart of most Haswell-powered Ultrabooks. The first 802.11ac routers carried a hefty premium, but this has dropped quickly to the point where price shouldnt be a barrier to anyone keen to hop onto the bandwagon. In addition 802.11ac is extremely efficient and it brings power savings compared to 802.11n, meaning it is ideal for mobile devices. If you Iive alone in á small flat whére you have nó signal problems 802.11n may serve all your needs, but in larger, multi-user homes and homes with network attached storage the benefits of 802.11ac are simply too good to miss out on. Especially when buying devices you expect to keep for a number of years. Wireless ac wiIl be built intó most laptops ánd phones within thé next 12 months and routers will increasingly come with it (though ISPs are typically slow to adopt new standards in the routers they give out, so plug an ac router into theirs and switch off their wireless to get around it). The articles beIow are writtén by the TrustédReviews team, which incIudes many of.
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