Entering this string a little late, but my $.02 is that many older pc's required
72 pin simm's to be matched pairs - you could mix 2 - 8 mb chips with 2 - 32's,
etc. but 1 8 and 1 - 32 would not work.  I'm a little surprised that the AST
seems to require 4 of the same -  did you ever try a mix of pairs?

Mark Rode wrote:

> >I've never heard of any issues about size mixing.  I've never read a user
> >manual that says use only certain sizes together. It would be a surprise if
> >your system has a problem with this mixture, unless it doesn't support a 256
> >Mb DIMM.
>
> Well you have now. I own a AST 486DX33 Advantage Pro that requires that all
> simms be the same. There are four simms slots and you can only use 72pin no
> parity simms configured at four 4s, four 8s, four 16s, or four 32s. You
> can't mix a 8 with a 16. I also have a one year old EPOX super seven board
> with three SDRAM DIMM slots that maxes out at 3 X 128 meg SDRAM DIMMs for a
> total of 384 megs. It won't accept a 256 meg SDRAM. I have tried it.
>
> Rode
> The NOSPIN Group

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