I don't understand what you mean by marketability/profitability of 16MB SIMMs, if money is no object and you don't care about selling them then ANYTHING is possible to make, they were commidity RAM and the specs are out there. All I was trying to say is you can find them cheaper then it would cost to make them so there isn't a market for them.

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I know it doesn't totally make sense, part of this is driven by wanting to make something "new". When I looked for SIMMs that met my specs, the cost was getting in the realm of maybe just looking into making it myself and learning something new along the way. My thinking is if the SIMM takes 3 main components and each component is $3-4 then it is probably feasible cost-wise. I'm just not sure what parts would be best to use, if they are still manufactured, or more contemporary/available equivalents could be used.