Evaluate software minimum requirements

Question

Is there a way to evaluate the minimum requirements of a software? I mean, how can I discover, for example, the minimum amount of RAM that my application will need?

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Answer 1

Given the data structures used by the application, estimate how much space they will take up in normal use. Using that estimation, set up a number of machines (virtual or physical) to test the estimate in different scenarios (i.e. different target operating systems, different virtual memory settings, etc).

Then measure the performance of the application in the different scenarios. Your minimum settings will be the machine that performs the least adequately while still being acceptable.