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- Newsgroups: comp.sys.ibm.pc.hardware
- Path: sparky!uunet!caen!destroyer!mudos!mju
- From: mju@mudos.ann-arbor.mi.us (Marc Unangst)
- Subject: Re: Advantages of 36 bit simms?
- Message-ID: <BuLM4u.n1o@mudos.ann-arbor.mi.us>
- Date: Tue, 15 Sep 1992 02:41:10 GMT
- References: <192pmnINN9q1@hilbert.math.ksu.edu>
- Organization: The Programmer's Pit Stop, Ann Arbor MI
- Lines: 31
-
- In article <192pmnINN9q1@hilbert.math.ksu.edu> bennett@math.ksu.edu (Andy Bennett) writes:
- >It has been noted recently in this group that Dell and Zeos now use 36 bit
- >simms on some machines, instead of the old 72 bit simms. Why? Does a 36 bit
- >simm have some advantage over a 72 bit simm that justifies cluttering up
-
- 72-bit SIMM? Where can I get one of those? The SIMMs I think you're
- thinking of are 9-bit SIMMs; those are the "old" SIMMs and the ones
- now in wide use on PC-class machines.
-
- There's really nothing "new" about the 36-bit SIMM, anyway; IBM has
- been using them on PS/2's, and workstation vendors (Sun, DEC, etc.)
- have been using them for years. It's just their entrance on the PC
- market that makes them seem new.
-
- As for the advantages, the primary ones are board space and
- fabrication cost. You can cram as much memory onto one 4MBx36 SIMM as
- you can on four 1MBx9 SIMMs. It eliminates the need to have multiple
- SIMMs for a bank of memory. (Yes, it is a bit odd at first to watch a
- machine actually *work* with only one SIMM in it, but you'll get used
- to it.) And I would imagine that one 4MBx36 SIMM is less expensive to
- manufacture than four 1MBx9 SIMMs.
-
- I'd be more than happy to see the industry move to 36-bit SIMMs.
- There is really no disadvantage, and it would keep me from having to
- explain to customers why they need to add memory four SIMMs at a time
- in their 386...
-
- --
- Marc Unangst | Real men don't use Windows. Real men use X.
- mju@mudos.ann-arbor.mi.us | Only a real man would use a GUI where the
- | shift keys after "Alt" are "Super" and "Hyper."
-