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Bandwidth vs Transfer Rate

al flag

I cannot seem to find a definitive answer on this anywhere. But, in general, does transfer rate go up with your bandwidth? Or are data transfer rate and the overall bandwidth, two different things?

i.e. Does 1 megabyte of data transferred over a 10mbit connection take the same amount of time to transfer as it does over a 100 or a 1000mbit connection, or, does that 1megabyte transfer 10x or 100x faster?

or. If i have SATA1 at 1.5gbit, would storing a 100 megabyte file take more or less time than if i stored the same file on the same drive connected up at SATA3 speeds (assuming the drive is SATA3 capable)

Ron Maupin avatar
us flag
"_Or are data transfer rate and the overall bandwidth, two different things?_" Yes. The bandwidth is how many bits per second can be sent on the physical layer (a 100 Mbps ethernet interface always transfers data at a rate of 100 Mbps because that is the bandwidth). How much application data you can send in a given time period depends on a lot of factores, startin with the overhead of the various protocols involved, how conested is the network, how busy are the end devices, etc.
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