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Operating Systems: (FAQ)
volumes x width x height x planes x bytes per complex pixel
For such a study you'd need at least 128 Megabytes of swapspace. Swapspace is the amount of virtual memory the operating system makes available to programs when they are run. RAM on the otherhand is the amount of physical memory your workstation has. The more RAM you have the faster you can process data, but it is the swapspace which determines whether you can process the data at all. As a general "rule of thumb" you should have at least twice as much swapspace as RAM.