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USB 的效率低落是 protocol 問題物理層速度拉得再高，效率依然低.
這是二難的問題，protocol簡單就很難相容各種不同種類的裝置，protocol多考慮一些不同面向速度當然就會被拉低，不過從USB的名稱來看，它本來目的就是要相容各種設備，結果當然在速度上就沒有SATA這種focus在某一領域的protocol快
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Reader Comments (Page 1 of 1)
tyf @ Nov 2nd 2009 8:33PM
USB 的效率低落是 protocol 問題
物理層速度拉得再高，效率依然低.
keyesliu @ Nov 2nd 2009 9:10PM
這是二難的問題，protocol簡單就很難相容各種不同種類的裝置，protocol多考慮一些不同面向速度當然就會被拉低，
不過從USB的名稱來看，它本來目的就是要相容各種設備，結果當然在速度上就沒有SATA這種focus在某一領域的protocol快