If your computer lacks the random access memory (RAM) needed to run a program or operation, Windows uses virtual memory to compensate. To find out how much RAM your computer has, see Find out how much RAM your computer has.
Virtual memory combines your computer’s RAM with temporary space on your hard disk. When RAM runs low, virtual memory moves data from RAM to a space called a paging file. Moving data to and from the paging file frees up RAM so your computer can complete its work.
The more RAM your computer has, the faster your programs will generally run. If a lack of RAM is slowing your computer, you might be tempted to increase virtual memory to compensate. However, your computer can read data from RAM much more quickly than from a hard disk, so adding RAM is a better solutionoad Link:
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