ethernet cable speed

[sebgar]

I'm confused about the concept of speed in different ethernet cables.

Assuming I have 2 networks, one is 100M and the other is 1G. If I send anything less than 100M of data through each networks, will the speed be the same since bandwidth networks have a bandwidth greater than the data?
And if I send 1G of data, will it the speed be ten times slower in the 100M network than it would be in the 1G? But if I only send 200M then the 1G network would only be twice as fast as the 100M?

Thanks

 

[pbernardi]

If I send anything less than 100M of data through each networks, will the speed be the same since bandwidth networks have a bandwidth greater than the data?

No. 1Gpbs will always work at 1Gbps, even when you do not use all your bandwidth.

And if I send 1G of data, will it the speed be ten times slower in the 100M network than it would be in the 1G?

Yes.

But if I only send 200M then the 1G network would only be twice as fast as the 100M?

No, you will still be 10x faster. I think the main point is that you confuse Mpbs with Mbit.

100 Mbps = 100 Mbit/s. It is a bandwidth measure. E.g.: My connection supports up to 100 Mbps.
100 Mbit = Storage. E.g: My file size is 100 Mbit (or 12.5 Mbyte)