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From: wkb@cbnews.att.com (Wm. Keith Brummett)
Newsgroups: comp.sys.ibm.pc.hardware
Subject: Re: What chips needed to upgrade ATI VGA Wonder to  512k
Summary: (8) 64Kx4 chips for $25
Message-ID: <1990Oct15.180006.15237@cbnews.att.com>
Date: 15 Oct 90 18:00:06 GMT
References: <5263@quiche.cs.mcgill.ca>
Distribution: na
Organization: AT&T Bell Laboratories
Lines: 40


    In article <5263@quiche.cs.mcgill.ca>, dragon@quiche.cs.mcgill.ca
    (Edward YEE) writes:
    > Hello,
    > 
    >    I have an ATI VGA Wonder with 256k right now, and I would like to
    > upgrade it to 512k.
    > 
    >    I went to my local computer store, and asked for the 8 chips to do
    > the upgrade.  They tried to sell me chips with the number 24164 (or
    > something like this), at $11.00 each!
    > 
    >    I always thought it would require about $30-$40 dollars worth of DRAM
    > to upgrade, not $90.

    I paid $165 for my 256K VGA Wonder at a local computer show.  The dealer
    sold me the chips to make it 512K for $25, i.e. $190 for both.  I
    plugged in the chips myself.

    >    What chips are needed to do the upgrade? (is it 64k x 4 chips?  if
    > so, what does the 64k x 4 mean? [electronics rookie here]  does it
    > mean it requires 4 chips to get 64k.  if so, then 8 chips is only
    > 128k, not the 256k that is required.)  My manual says to use 8,
    > 64k x 4 chips, 41464-10,

    The "64k x 4" shows how the bits are "arranged" on the chip.  The number
    of bits is 256k (64k x 4 = 256k x 1).  Eight chips x 256k bits/chip gives
    you 256k bytes.

    > but the dealer says that doesn't get it up to 512k.  Who's right?

    The manual is.  Get another dealer.

    -- Keith

-- 
    | W. Keith Brummett          (614) 860-3187          AT&T, Room 3B-202 |
    | att!cblph!wkb                                    6200 East Broad St. |
    | or, wkb@cblph.ATT.COM                        Columbus, OH 43213-1550 |
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