Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!apple!well!nagle
From: nagle@well.sf.ca.us (John Nagle)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Mac SIMMs vs. PC SIMMs
Keywords: nine-chip, eight-chip, interchangeable?
Message-ID: <25625@well.sf.ca.us>
Date: 23 Jun 91 17:57:27 GMT
References: <1991Jun20.191113.8626@gn.ecn.purdue.edu>
Lines: 25

pardue@gn.ecn.purdue.edu (Jon Pardue) writes:


>Greetings, netters!

>From "Macintosh Repair and Upgrade Secrets," Larry Pina, 1990, page 205:

>[words in *asterisks* were italicized in the original]

>"PC SIMMs are the same physical length as Macintosh SIMMs but they contain
> nine RAM chips instead of eight.  These work fine in PC's *and* Macs.  Eight-
> chip Mac SIMMs *only* work in Macs.  If you have access to nine-chip SIMMs,
> or if you might need to use them in a PC someday, don't hesitate to try them.

     You might even order a Mac with parity and find out when your memory is
flaky instead of just thinking "it's a glitch".  Macs with parity are
available, although Apple doesn't push them.  The Government insists on
them for most DoD buys.

     Now that the price differential between 8 and 9 chip SIMMS is small
(or even negative), ordering a Mac with parity makes more sense than ever.
For those who have parity-equipped Macs, what kind of error rates do you
see?

			     John Nagle