Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!usc!zaphod.mps.ohio-state.edu!rpi!crdgw1!davidsen
From: davidsen@crdgw1.crd.ge.com (William E. Davidsen Jr)
Newsgroups: comp.sys.ibm.pc.hardware
Subject: Re: naive question, static column RAM
Message-ID: <10971@crdgw1.crd.ge.com>
Date: 13 Aug 90 20:09:56 GMT
References: <3579@nisca.ircc.ohio-state.edu>
Reply-To: davidsen@crdos1.crd.ge.com (bill davidsen)
Distribution: usa
Organization: General Electric CRD, Schenectady, NY
Lines: 21

In article <3579@nisca.ircc.ohio-state.edu> neb@nisca.ircc.ohio-state.edu (neb) writes:

| What is Static Column dual-in-pack RAM. Is it just
| your normal every day DRAM?

  No. It is DRAM which gives very fast access when consecutive addresses
in the same column are read. This can give near zero w/s access without
cache or 60ns chips. Compaq used this in some models, as I recall.

| Is 1M of 256 x 1K chips (36 chips) of this memory worth
| $250? At least this is how much a company that sold me
| my computer wants. These are 100ns chips.  They are
| selling me a piggy back board with 0K (for 386 ) for
| $205. Is this a reasonable price?

  Column static is expensive. Check the back of _PC Week_ or _Computer
Shopper_ for current prices. The board is probably only available from
one vendor, who will charge you every cent you will pay.
-- 
	- bill davidsen (davidsen@crdgw1.crd.ge.com)
	GE Corp. R&D Center; Box 8, KW-C206; Schenectady NY 12345