Path: utzoo!attcan!uunet!cs.utexas.edu!wasatch!mailrus!iuvax!bobmon
From: bobmon@iuvax.cs.indiana.edu (RAMontante)
Newsgroups: comp.sys.ibm.pc
Subject: Re: Extended memory board and RAM speed...
Message-ID: <23080@iuvax.cs.indiana.edu>
Date: 8 Jul 89 18:23:36 GMT
References: <5876@rpi.edu>
Reply-To: bobmon@iuvax.cs.indiana.edu (RAMontante)
Distribution: na
Organization: malkaryotic
Lines: 15

spierk@turing.cs.rpi.edu (Kevin Spier) <5876@rpi.edu> :
-machine runs at 12MHz with 1 wait state. Can I use 80ns chips or do I
-need faster? And can I just buy 70ns chips anyway; ie.  is better to


It occurs to me that the simplest, most reliable answer to this sort of
question is to look a the memory chips you currently have, and get more
of the same.

My understanding of waitstates is (still) weak, but if it really means
just a second clock cycle in memory accesses, then 12MHz/1ws would
be equivalent to 6MHz/0ws and 120ns chips would be adequate (but what
does the machine already have??).  In any case, I can't imagine how
faster-than-necessary chips would do you any good, as the machine will
take as long as it takes to access memory regardless.