From: Randal Whittle (rwhittle_at_usa.net)
Date: Thu Jan 07 1999 - 11:25:56 EST
At 08:45 AM 1/7/99 -0500, you wrote:
>> No, don't expect it to be HD speed, but I would find it compareable to a
>> CD-ROM at about...oh...8x speed. Maybe 12x. Don't quote me. :-) I'm
>> sure there are data transfer rate specs somewhere for the Zip that will
>> allow you a more exact comparison.
>
>That sounds about right. I think the Zip drive is suppose to
>top out at around 1.5 MB/sec transfer rate. A 1x CD-ROM is
>150 kB/sec, so an 8x would be 1.2 MB/sec, and a 12x would be
>1.8 MB/sec.
Wow, I put that baby right into the zone! ;-) Thanks for checking those
specs, John.
>I'm not sure what the specs of a standard parallel port are,
>but for some reason a max transfer rate of about 900 kB/sec
>comes to mind.
Sounds right, but in reality I find these wired transfer rates to be way
below their presumed "capacity". Standard Ethernet is supposed to be
capable of 10 Megabits per second but the reality is when I do file
transfers over it with my home-spun Ethernet system, I typically get
somewhere around 3 rather than 10. Of course, there is protocol overhead
and whatnot, but the fact remains that the reality is around 1/2 what the
stated / theoretical rate is. I'm guessing the parallel port speed is a
similar issue.
- Randy Whittle
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