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ryuzaki · 25-07-2008, 16:36

1.5M is the absolute minimum you can get away with for 50M down. Any less and there simply will not be enough bandwidth to actually download at 50M, since to download you also need to upload reciprocal ACK packets and other management info.

If you do the maths, you can see that on 20meg you need about 550k absolute minimum to sustain that kind of speed down, which with overhead comes to a bit more.

Really, if they want 50meg to work as advertised (i.e. multiple simultaneous users all doing different stuff, including sending emails/uploading photos/gaming/iPlayer or other actions that generally cause outgoing traffic) then 1.5M is not enough. 5M might be closer to realistic for that kind of usage.

Hopefully eventually we will see fibre optic internet available with 100/100 symmetrical connections, but until then upload speeds are likely to remain ridiculous due to lack of competition.

25-07-2008, 16:36	#14
ryuzaki Permanently Banned Join Date: Jul 2008 Posts: 16	Re: 50mbit or better upload speeds? 1.5M is the absolute minimum you can get away with for 50M down. Any less and there simply will not be enough bandwidth to actually download at 50M, since to download you also need to upload reciprocal ACK packets and other management info. If you do the maths, you can see that on 20meg you need about 550k absolute minimum to sustain that kind of speed down, which with overhead comes to a bit more. Really, if they want 50meg to work as advertised (i.e. multiple simultaneous users all doing different stuff, including sending emails/uploading photos/gaming/iPlayer or other actions that generally cause outgoing traffic) then 1.5M is not enough. 5M might be closer to realistic for that kind of usage. Hopefully eventually we will see fibre optic internet available with 100/100 symmetrical connections, but until then upload speeds are likely to remain ridiculous due to lack of competition.