Article View: comp.sys.mac
Article #5135Re: Nix on mixing memory speeds?
From: john howell
Date: Fri, 22 Sep 1989 18:14
Date: Fri, 22 Sep 1989 18:14
22 lines
1397 bytes
1397 bytes
In article <11979@cit-vax.Caltech.Edu>, mym@tybalt.caltech.edu (Mike Meckler) writes: > I was told yesterday, much to my surprise, that one cannot mix speeds of > memory chips in one machine. I've known that I can't use slow memory in my > Mac II, but this person told me that if I took my 2 meg Mac II, with its > 120 ns memory, and replaced one of the banks with 80 ns chips from, say, > Chip Merchant, then I would start to get random memory errors. "Usually > when you're doing a large compilation," he threatened. > > Is this true? > No! No matter what the speed of the memory is, it will run at 120 ns. No faster. The faster memory chips just have been tested to run faster and are therefore worth more money. You do not need to be concerned about where the SIMMS go as long as they are grouped in groups of 4 by SIZE, not speed. Just make sure they are all at least 120 ns chips or faster, unless of course you have a new ][ci, then they all need to be 80ns or faster. John
Technical Details
Message-ID:
<119@suntc.UUCP>Path:
arc1-ca.pugleaf.net!utzoo!censor!geac!jtsv16!uunet!suntc!jh34607References:
<11979@cit-vax.Caltech.Edu>Show Full Headers
Complete Article Headers
Path: arc1-ca.pugleaf.net!utzoo!censor!geac!jtsv16!uunet!suntc!jh34607 From: jh34607@suntc.UUCP (john howell) Newsgroups: comp.sys.mac Subject: Re: Nix on mixing memory speeds? Summary: NO PROBLEM OR RESTRICTION Message-ID: <119@suntc.UUCP> Date: 22 Sep 89 18:14:35 GMT References: <11979@cit-vax.Caltech.Edu> Distribution: usa Organization: Deere & Co. Technical Center, Moline,IL Lines: 22