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To: rudedog who wrote (63412)8/26/1998 1:14:00 PM
From: Steve Porter  Read Replies (1) of 186894
 
rudedog,

I was basing my USB statement on empirical analysis of the capability of a
moderately loaded USB system, where the best numbers we could achieve were 1
to 1.2 MBps.


Okay, sounds fair to me. The point behind my statement of 1.5MBps was so that we could keep thing "simple" for those who didn't understand the difference between the two. While there is overhead with any bus system (even in SCSI as you stated) the conversion of raw numbers shouldn't be changed.

I was just trying to help avoid confusion with those folks who didn't understand the basic conversion.

I think we can some the whole damned thing up like this:

USB has a theoretical maximum through-put of 1.5MBps. However, due to the overhead involved with the protocol, real world performance will likely max-out somewhere in the 1.1 to 1.2 MBps range.

Sound good? <G>

BTW I think USB is fine for its intended use, just not anything like a good mass
storage connection. It is kind of like early IDE in performance characteristics with
mass storage.


Agree 100%

Steve
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