*BSD News Article 20755


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Path: sserve!newshost.anu.edu.au!munnari.oz.au!ariel.ucs.unimelb.EDU.AU!ucsvc.ucs.unimelb.edu.au!lugb!latcs1!wongm
Newsgroups: comp.os.386bsd.questions
Subject: ISA or EISA ?
Message-ID: <CD8wJM.7n8@latcs1.lat.oz.au>
From: wongm@latcs1.lat.oz.au (M.C. Wong)
Date: Sun, 12 Sep 1993 14:35:46 GMT
Organization: Comp Sci, La Trobe Uni, Australia
Lines: 36

Hi, 
  I am thinking of upgrading to an EISA + VLB (if one exsists) board,
mainly for performance and 32 RAM access purpose!

  However, having chatted to my vendor (of my existing ISA machine), I
was told that EISA + VLB slots board does not exist, and EISA is going to
face extinction soon! I was shocked by that sort of statement, and would
like to confirm with people who use EISA machine! To my impression, it
seems as if EISA is more likely to be the trend over ISA, who is right,
me or my vendor ? Is there such a config of EISA + VLB slots ?

  Secondly, my vendor claimed that for EISA and ISA, the performance of
Ethernet card is unlikely to make an observable difference, since the
peak transfer rate is 10Mbits/sec! And accordingly, he suggested me to stick
with my ISA + VLB slots board instead of investing in an EISA + VLB slots
board! Also, he claimed that HDD transfer rate depends mainly on the controller
instead of the type of bus ! Finally, he said the different components prices
for EISA is going to be more expensive than an ISA one, and does not worth
the extra dollars!

  In my opinion, many of the people out there who use Unix boxes seem to
go for EISA, for whatever reasons they've got!

  For myself, I would like to know for 386bsd/FreeBSD/NetBSD Unix box,
does EISA show much difference over ISA ? And with EISA, will it promise
greater trnafer rate for Ethernet card, and how about SCSI-2 HDD, is that
affected by the type of bus (since it is DMA) ?

  Has anyone done any sort of benchmarking with 386bsd/FreeBSD/NetBSD 
between ISA and EISA machines of same CPU ?

  Thanks in advance and email replies appreciated!

- wongm@latcs1.lat.oz.au
-- 
- wongm@latcs1.lat.oz.au