1. First of all, you need a process killer or PC booster.
It is to free some of memory used by background processes and active processes. You can use task manager instead of PC booster. But, close only background processes and active processes. Do not kill/close any system process while using task manager as it may cause hanging or restart windows explorer.
This will free about 300 to 500 MB RAM.
2. Then, you will need 4/5 pen drives. Attach them to cup from back and front ports.
Right click and format each pen drive. Then, go in properties of each removable disk and click on ready boost then, choose use this device and go with windows recommendation. With Ready boost, windows use external storage as source of memory.
You should use at least 2 pen drives. But 4/5 pen drives is the better option for optimal performance. Do not use the reserved space for storage.
This will make it stop working fully. Cached memory depends on hardware, software and type of pen drive.
3. Now in last step, go to control panel and type performance and click on "adjust the appearance and performance of windows.
Choose adjust for best performance. It will lower the texture quality of everything
Then click on advanced and then on change. select any drive and type the value of free volume by subtracting 10 GB on that drive . You can do this with all of your drives.
It is just little extra use of the hard disk free space for caching some memory.
Reserving space in each drive is important for caching memory. The cache memory by HDD depends on its hardware type.
This increases virtual memory in other words.
You can also use software's like Radeon ram disk; Data ram ram-disk, E-booster, Soft-perfect ram-disk, Super-cache and many HD graphics soft like DX12 or NVidia G sync or 3D Mark or Radeon HD Graphics.
There are many free and paid versions of such software's. You can find them on their official sites. Just type the name and download. Most of them are almost free and very useful.
So you can play or run any programs which need double your RAM.