Memory upgrades to R/6000s

[Vic Abell]

I enclose two articles previously posted on this subject.  I have also
discussed the possibility of obtaining unpopulated memory boards from
IBM with my local ACIS rep.  While he was initially optimistic that it
would be possible to get them if the order quantity was large enough,
he does not now believe it will be possible.

Vic Abell <abe at mace.cc.purdue.edu>

  Article 2758 of comp.unix.aix:
  >From: mccalpin at perelandra.cms.udel.edu (John D. McCalpin)
  Newsgroups: comp.unix.aix
  Subject: Re: Non IBM Scsi Disk and memory
  Date: 27 Nov 90 20:36:54 GMT
  
  >> On 27 Nov 90 16:36:30 GMT, donp at niaid.nih.gov (Don Preuss) said:
  
  Don> [.....]    Also, IBM is charging a shitload for
  Don> their memory boards and SIMMS. Has anyone tried 3rd party memory/or 
  Don> recommend where to get it from.
  
  I know of 3 vendors who are advertising RS/6000 SIMMs.  I also know
  that the SIMMs from at at least the first two of these vendors
  actually work, since I have had some in my machine for testing.
  
  #1 Impediment, Inc.
     333 Franklin St
     Duxbury, MA 02332
     (617) 837-8877
  
  #2 Clearpoint
     1-800-253-2778
  
  #3 Dataram
     1-800-822-0071
  
  Don't be surprised if there is a bit of a wait on delivery, since no
  one is really geared up for production yet.  1 MB, 2 MB, and 4 MB
  SIMM's should be available in quantity from these guys by January or
  so (my guess).
  
  --
  John D. McCalpin			mccalpin at perelandra.cms.udel.edu
  Assistant Professor			mccalpin at brahms.udel.edu
  College of Marine Studies, U. Del.	J.MCCALPIN/OMNET
  
  
  Article 2941 of comp.unix.aix:
  >From: lab3e at landau5.phys.virginia.edu (Louis A. Bloomfield)
  Newsgroups: comp.unix.aix
  Subject: Non IBM Memory for RS/6000
  Date: 11 Dec 90 17:31:11 GMT
  
  A number of individuals have asked about 3rd party memory for the RS/6000
  machines (e.g. posting on Nov 27, 1990 by Don Preuss: donp at niaid.nih.gov).
  
  The actual memory cards are themselves difficult to clone, however
  SIMM kits (eight SIMM modules) to upgrade these cards to 16 MB or 32 MB
  are now being sold by:
  
  Impediment, Inc.
  333 Franklin Street
  Duxbury, MA 02332
  (617) 837-8877
  
  at a price of less than $200 per MB.  They are already shipping the kits.
  I have had a 32 MB kit in my model 320 for about a month and its works
  beautifully.  I purchased my machine with only 8 MB of memory, hoping
  that some company would sell me SIMMs for a price more in line with the
  actual cost of the memory chips.  I seem to have gotten lucky.
  
  The SIMM kits work in the models 320, 520, and 530.  Unfortunately, IBM
  issued the model 540 with special 3.5 volt memory chips, so that these
  new SIMM kits will not work in the model 540 until they are field
  changed by IBM.
  
  -------------------------------------------------------------
  Louis A. Bloomfield                        LAB3E at VIRGINIA.EDU
  Assistant Professor
  Department of Physics
  University of Virginia