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Article #222

[SUMMARY & THANKS!] Can I mix 30 pin and 72 pin SIMMs?

#222
From: Rajesh K. Singh
Date: Wed, 18 Sep 1996 00:00
46 lines
3128 bytes
I posted a question regarding mixing 30 pin and 72 pin SIMMs on the same
mother board. THANKS a lot to all of you for clarifying the issue to me. 
Below is the summary of responses. 

1. It is NOT UNUSUAL for motherboards of that era to have only 2 72 pin
slots and to have a 4 30-pin bank. 

2. READ the fine manual. Unfortunately, for me, the system did not come
with manual and when I contacted the seller, I was told that it was
assembled in far east (read Taiwan) and that the assembler can not be
bothered by me. The seller (Midwest Micro) did fax me 4-5 pages of
material that implied that, yes, I could have the mix of the memory. 

3. However, since 30 pin SIMMs are getting obsolete, I am better off
buying 2 of 8MB, and discarding current 2 of 4MB SIMMS.  Even better, just
buy one 4x32 16MB SIMM, keep one 1x32 4MB SIMM, for a total of 20 MB, and
donate/junk the other 4MB piece. 

*** I am buying 1 of 16MB, keeping 1 of 4MB, selling/donating other 4MB**

If you have read this far, THANKS again. I have additional questions. 

1. Newer 16MB SIMMs are rated 60ns, my two existing 4MB SIMMs are 70ns. 
Would they work together? Midwest Micro(SALES!) says yes, but they are
sales. Midwest Micro's tech support is researching the issue.  I want to
hear your opinions, URL references, etc. 

2. The VESA board in my computer supports only 540 MB. Should I put a
promise card to have extra capacity (up to 1.6GB) or just put up with 540
MB only D: drive. C:, the existing drive, is about 480.  It is for home
use, and it may be 2-3 years before 540 gets full.  By then, it may not do
much good to have 1.6 GB drive, on a 486 machine, if software is being
written for 986 ;-)

3. HOWEVER, my spouse, a CS student, would like to install Win 95!  Is 540
MB too little for Win 95?  (I was horrified to see that a single compiler
took more than 100 MB space!) Would appreciate your comments. 

--raj (raj@goliath.stanford.edu)

-- 
--
Rajesh Kumar Singh                   E-mail: raj@goliath.stanford.edu
Gauls!  We have nothing to fear; except perhaps that the sky may fall
on our heads tomorrow.  But as we all know, tomorrow never comes!!
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Message-ID: <51pi88$f9l@nntp.Stanford.EDU>
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From: raj@goliath.Stanford.EDU (Rajesh K. Singh)
Subject: [SUMMARY & THANKS!] Can I mix 30 pin and 72 pin SIMMs?
Date: 1996/09/18
Message-ID: <51pi88$f9l@nntp.Stanford.EDU>
X-Deja-AN: 181446232
organization: Makalu Mountain Hermitage, Mt Makalu, Nepal
newsgroups: comp.sys.ibm.pc.hardware.misc,comp.sys.ibm.pc.misc,su.computers.ibm,su.etc,misc.consumers,ba.consumers