Hi Nakool -
They are two separate things, which can work together. But Virtual Memory does NOT take the place of having enough RAM. That's why I gave you the best scanner to run to find first-quality discount RAM to upgrade if you want. What did it find?
There is more here to help you understand the difference between physical RAM and Virtual Memory: https://science.jrank.org/pages/1698/Computer-M...
I hope this helps. Let me know how optimizing the Virtual Memory works when you follow the other guide I gave you.