Gigabit Ethernet actual speed?


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you were told correct.

it's theoretical "raw" bandwidth.

actual data rate on a good setup is 800-900mbits/s.

as you know maximum ethernet transmit unit is 1500bytes. out of those 42bytes are used for tcp/ip header, so it's already impossible to achieve 1gig/sec.. to that add possible loss of packets, possible lack of cpu to handle such fast transfers, possible lack of I/O, etc, etc, etc

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Yes Intel CSA does fix these limatations, but no hard drive can hit 125MB/sec (which is around what gigabit ethernet can hit). Allthough if you get maybe a rocket drive from http://www.cenatek.com/ you might be able to get close to 1gb a sec. I tested one of those drive, and got 100MB/sec off of it over standard pci. At the time I did not have two computers with gigabit, so I could not test the throughput.

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