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From: mlzerkle@athena.mit.edu (Michael L Zerkle)
Newsgroups: comp.sys.mac.hardware,comp.sys.mac.misc
Subject: Speed of 256k SIMMs
Message-ID: <1991Jun27.140800.6079@athena.mit.edu>
Date: 27 Jun 91 14:08:00 GMT
Sender: news@athena.mit.edu (News system)
Organization: Massachusetts Institute of Technology
Lines: 27

I am thinking about buying the SE to SE/30 upgrade and I would 
like to know if I can use the 256k SIMMs that were originally
in my Mac SE.  I believe that I can use 120 ns or faster SIMMs
in the SE/30, however I am not sure how fast my 256k SIMMs are.

I understand the speed of the chips is usually part of the chip
ID number but these seem to be a little different than I am use
to seeing.  Can someone tell me the speed of the RAM chips and 
the SIMMs?

RAM chip:

           -12
  TI H874058SN
  TMS  4256FML
  SINGAPORE  H


Back of SIMM:

       -15L
       8740
  TM4256HU8


Thanks in advance,
Mike Zerkle