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From: tjr@cbnewsc.att.com (thomas.j.roberts)
Newsgroups: sci.electronics
Subject: 1Mx9 DRAM, Should New Design use SIMM or SIP ??
Message-ID: <1991Jan10.170127.9293@cbnewsc.att.com>
Date: 10 Jan 91 17:01:27 GMT
Organization: AT&T Bell Laboratories
Lines: 19

I am designing a new board that uses 1 Meg by 9 DRAMS. Clearly,
it is cheaper (and uses less board space) to use regularly-available
SIMMs or SIPs than to use individual chips. These SIMMs and SIPs
are used in scads of PC clones, PS/2s, Macs, etc.; they are often
cheaper than 9 1Mx1 DRAM chips.

Question: Which should I use, SIMMs or SIPs ??
	The SIPs have through-hole pins, and no edge connector, so
	they appear to take less board-to-board space; SIMM sockets,
	however, are available to mount the SIMM at an angle, reducing
	their height (and board-to-board space). Connectors are readily
	available for both, and prices are comparable.

What are the advantages/disadvantages of SIMMs and SIPs ??

Thanks in advance,

Tom Roberts
att!ihlpl!tjrob  TJROB@IHLPL.ATT.COM