Virtual+Memory

Virtual Memory Virtual memory is non-physical memory (So what is that ?).

Windows uses virtual memory when it does not have enough "regular" physical memory to perform a task. When this happens Windows uses your hard drive to store information that normally would be put into your RAM memory.

For example:- Imagine you have 1 gigabyte of RAM available, and you start launching programs like no tomorrow, effectively using up more physical ram that you have available. However, your programs are still running just fine. How is that ? Windows is using a portion of hard drive space to supplement your physical RAM (And it will be restored once Windows is done with it).

This throws up the question:-. Why bother to add extra RAM to the computer if it can use hard drive space instead?

The overriding factor is: - RAM is much faster.

Using a lot of virtual memory, slows your computer down

So obviously one needs to go out and buy more RAM.  