For any given version of Perl there is only one source code (any patches that might have been applied in the creation of a binary distribution notwithstanding) so the chances of different binary distribution actually making any difference in regard to resource usage are pretty slim - it is possible that a different C compiler (such as Borland) might make different optimizations and might make a perl binary that performed slightly different, but in general the pattern of resource usage is down to the way that perl works (and the design of your program) rather than the way it was compiled.

/J\