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is 10MB - 100Mbps? (roughly)
I keep confusing the two.
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It depends on how the physical signal was encoded. 100 megabits per second could be 12.5 megabytes per second, 10 megabytes per second, or even about 9 megabytes per second. For example, SATA, PCIe 1.0 and 2.0, USB 2.0, and various other interfaces use something known as 8b/10b Encoding. Which means 8 bits are encoded into 10 bits (this is done for various reasons).
This is also dependent on how the data was encoded. Some protocols could compress the data to raise the effective bandwidth.
(This is probably why when discussing the bandwidth of the interface itself, it's measured in raw bits per second, partly because it's larger, but partly because a "byte" depends on how the bits were actually used)
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