dragon@quiche.cs.mcgill.ca (Edward YEE) (10/15/90)
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. 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, but the dealer says that doesn't get it up to 512k. Who's right? Thanks Edward
larry@nstar.uucp (Larry Snyder) (10/15/90)
dragon@quiche.cs.mcgill.ca (Edward YEE) writes: > 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! Look in the ATI manual - they tell you what kind of chips to use (44 something) - 8 are required to upgrade the board (I just upgraded my board last week). I picked up chips from robert@towers - you might want to contact him for a good deal (it won't cost more than $35 or so - maybe even less as RAM prices change daily).. I run X-windows with the ATI in 800 by 600 with 256 colors - very nice.. -- Larry Snyder, Northern Star Communications, Notre Dame, IN USA {larry@nstar, uunet!sco!romed!nstar!larry, nstar!larry@ndmath.math.nd.edu} backbone usenet newsfeeds available Public Access Unix Site (219) 289-0282 (5 high speed lines)
davem@nro.cs.athabascau.ca (10/15/90)
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. > > 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, > but the dealer says that doesn't get it up to 512k. Who's right? > > Thanks > > Edward The manual's right. Get out your calculator and multiply 64 x 4. It should yield the same answer as 256 x 1. Each chip holds the same amount of data; it simply does it in a different fashion. The 41464 is in common use in Amigas and I have a littlt 68000 unit that also uses them.. Dave McCrady | ersys!davem@nro.cs.athabascau.ca Edmonton Remote Systems | 13324-138 Street | BBS: (403)-454-6093 300-9600 bps (HST) Edmonton, AB Canada T5L 2B4 | USENET (403) 452-3254 300-2400 bps
wkb@cbnews.att.com (Wm. Keith Brummett) (10/16/90)
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 | `----------------------------------------------------------------------'
dlow@hpspcoi.HP.COM (Danny Low) (10/16/90)
> 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, >but the dealer says that doesn't get it up to 512k. Who's right? Your dealer is either incompetent or a crook or both. Think of 64K x 4 as 64K of 4 bit memory cells. This gives you 256K bits per chip. At 8 bits per byte, you need 8 of these chips. His prices are also way out of line. These chips are about $3 per chip. Danny Low "Question Authority and the Authorities will question You" Valley of Hearts Delight, Silicon Valley HP SPCD dlow%hpspcoi@hplabs.hp.com ...!hplabs!hpspcoi!dlow