Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!samsung!usc!snorkelwacker!apple!marc
From: marc@Apple.COM (Mark Dawson)
Newsgroups: comp.sys.mac.hardware
Subject: Re: SIMM speeds questions
Message-ID: <44266@apple.Apple.COM>
Date: 24 Aug 90 21:46:08 GMT
References: <90232.133607TCO1@psuvm.psu.edu> <1990Aug20.201020.4486@eng.umd.edu> <1990Aug24.114021.9235@smab.se>
Organization: Apple Computer Inc, Cupertino, CA
Lines: 29

In article <1990Aug24.114021.9235@smab.se> hans@smab.se (Hans C Larsson) writes:
>russotto@eng.umd.edu (Matthew T. Russotto) writes:
>
>>In article <90232.133607TCO1@psuvm.psu.edu> TCO1@psuvm.psu.edu writes:
>>>3. What is the minimum speed SIMM I can use in a IIci?
>>80ns, I think.
Correct
>
>We are in fact using 80ns *and* 120ns in IIci's !
>(Yes, we are suprised too but it works fine so far...)
>
You got lucky is the best answer.  When you buy XXns parts, the manufacturer
says that they'll run at XX, but they may run FASTER.  For example, if said
manufacturer produced 120ns and 80ns parts, and there was a sudden run on 
120ns, it may just relabel the 80ns as 120ns.  And they would be 120ns parts--
they'd just also happen to be 80ns parts.  We found a number of 100ns SIMMs 
that worked in the IIci (and yes, some 120ns too).  So if you could get a 
bunch of 120ns parts, you probably you sort through them and find a few that
would work on the IIci.  Note that they may start to fail once the machine
warms up some.

Mark
-- 
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Mark Dawson                Service Diagnostic Engineering
AppleLink: Dawson.M

Apple says what it says; I say what I say.  We're different
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