Re: TI-H: USB Link

To: ti-hardware@lists.ticalc.org
Subject: Re: TI-H: USB Link
From: Grant Stockly <gussie@alaska.net>
Date: Thu, 20 Aug 1998 15:58:23 -0800 (AKDT)
Delivered-To: ti-hardware-outgoing@towerguard.unix.edu.sollentuna.se
In-Reply-To: <35deaf1b.8000281@pilot.msu.edu>
References: <l03130302b201ee7aaf77@[192.168.1.66]> <l03130302b201ee7aaf77@[192.168.1.66]>
Reply-To: ti-hardware@lists.ticalc.org


>>>>> >> The USB ports should replace the serial ports, but not SCSI.  SCSI is
>>>>>  >>  faster.
>>>>>  >And for most people, harder to hook up.  Plus - who REALLY notices the
>>>>>  >difference in speed?  Honestly, the speed difference between
>>>>>  >IDE/EIDE/UDMA/SCSI/USB is nothing!
>>>>>
>>>>>  IDE - 16MBPS
>>>>>  EIDE/UDMA - 33MBPS
>>>>>  SCSI - 40MBPS
>>>>>  USB - 12MBPS
>>>><nicely>Right, and do you REALLY notice this?</nicely>
>>>
>>>You would if you're trying to copy large amounts of data, or the like.
>>
>>I don't know about PCs, but they Macs start up faster with a 40MBPS drive
>>than with a 10MBPS.
>
>All this talk about interface speeds is practically irrelevant...  If
>the media cannot be read faster than the interface, it doesn't matter.
>The way an IDE hard drive is manufactuered, it's not even designed to
>break UDMA limits.  Most of them will burst to the cache at 50 to 100
>megabytes/sec anyways which is fine for 99% of applications.  UWSCSI
>drives are made with tighter tolerances and for higher speed, so
>therefore the media can be read faster and therefore needs a faster
>interface.  They're also better suited for networked environments.
>This is also why they cost more.  A LOT more in some cases.

My UWSCSI drives do 70 to 144MBPS (depending where you are on the drive.

References:

Re: TI-H: USB Link

From: Grant Stockly <gussie@alaska.net>

Re: TI-H: USB Link

From: tsaimelv@pilot.msu.edu (Mel Tsai)

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