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From: dlow@hpspcoi.HP.COM (Danny Low)
Newsgroups: comp.sys.ibm.pc.hardware
Subject: Re: What chips needed to upgrade ATI VGA Wonder to  512k
Message-ID: <15090015@hpspcoi.HP.COM>
Date: 16 Oct 90 16:01:38 GMT
References: <5263@quiche.cs.mcgill.ca>
Organization: HP Lovecraft Division
Lines: 15

>   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