Singe stream gigabit speed will only be possible to nearby datacenters and only if services there don't rate limit and are underutilized. A bit farther, say 40 ms away, and you will be happy to see even a 50 Mbps stream. Then there is your ISP, they won't allow you to use your gigabit for long and will throttle your connection if you use too much bandwidth. Which leaves you with casual use of things that can do multiple streams to different nodes, like torrents or backup software that can transfer data in parallel (rare so far).
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Singe stream gigabit speed will only be possible to nearby datacenters and only if services there don't rate limit and are underutilized. A bit farther, say 40 ms away, and you will be happy to see even a 50 Mbps stream. Then there is your ISP, they won't allow you to use your gigabit for long and will throttle your connection if you use too much bandwidth. Which leaves you with casual use of things that can do multiple streams to different nodes, like torrents or backup software that can transfer data in parallel (rare so far).