Вообще, неплохо бы определиться о каких колонках речь
Virtual Memory Size
In Task Manager, the amount of virtual memory, or address space, committed to a process.
Memory Usage
In Task Manager, the current working set of a process, in kilobytes. The current working set is the number of pages currently resident in memory. On the Task Manager Processes tab, the column heading is Mem Usage.
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