#Broadcom 802.11ac driver that supports 1gbps speed Pc#
Instead of cluttering up your living room by running an Ethernet cable to the home theater PC under your TV, 802.11ac now has enough bandwidth to wirelessly stream the highest-definition content to your game console, set top box, or home theater PC. In situations where you don’t need the maximum performance and reliability of wired gigabit Ethernet - still a good option for situations requiring the highest performance - 802.11ac is certainly compelling. Compare this with 802.11n’s max theoretical speed, which is 600Mbps. In the real world, thanks to channel contention, you probably won’t get more than two or three 160MHz channels, so the max speed comes down to somewhere between 1.7Gbps and 2.5Gbps. That’s a transfer rate of 900 megabytes per second - more than you can squeeze down a SATA 3 link. The theoretical max speed of 802.11ac is eight 160MHz 256-QAM channels, each of which are capable of 866.7Mbps, for a total of 6,933Mbps, or just shy of 7Gbps. The more important factors will be the transmission power and antenna quality of your devices.Īnd finally, the question everyone wants to know: Just how fast is Wi-Fi 802.11ac? As always, there are two answers: the theoretical max speed that can be achieved in the lab, and the practical maximum speed you’ll most likely receive at home in the real world, surrounded by lots of signal-attenuating obstacles. As long as your router is well-positioned, or you have multiple routers, it shouldn’t matter much. But that’s the trade-off we have to make: There simply isn’t enough spectral bandwidth in the massively overused 2.4GHz band to allow for 802.11ac’s gigabit-level speeds. The 5GHz band, thanks to less penetration power, doesn’t have quite the same range as 2.4GHz (802.11b/g). In theory, on the 5GHz band and using beamforming, 802.11ac should have the same or better range than 802.11n (without beamforming). The older 802.11n uses this second method, which can be implemented by both routers and mobile devices.įinally, 802.11ac, like 802.11 versions before it, is fully backwards compatible - so you can buy an 802.11ac router today, and it should work just fine with your older 802.11n and 802.11g Wi-Fi devices. Beamforming can be done with smart antennae that physically move to track a device, or by modulating the amplitude and phase of the signals so that they destructively interfere with each other, leaving just a narrow, interference-free beam. This can increase overall throughput and make it more consistent, as well as reduce power consumption. Beamforming transmits radio signals in such a way that they’re directed at a specific device. 802.11ac also introduces standardized beamforming (802.11n had it, but it wasn’t standardized, which made interoperability an issue).
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