IIRC, memory allocation on the Mac is referring to the actual amount of physical memory allocated to an application. The virtual memory setting in Windows is for sizing the Paging file, disk space that is substituted for physical RAM if it runs low. In the new Mac OS X, the OS allocates memory dynamically the same way Windows does. Different versions of Windows differ in how well they handle memory allocation. Windows 9X doesn't do as good a job and a utility like ramboost can help. Windows 2000 and XP generally do a very good job of memory allocation and you would probably get less benefit from such utilities.

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