How to use pendrive as ram :

It make your pen drive/USB of large size as RAM, which will make your system faster. To know how to do this, follow below steps :

1.    Insert your pen-drive. Let your PC read it. Make sure to delete all the stuff on it         first.(Minimum 2 GB)

2.     Right click on My Computer.

3.     Click on Properties from context menu.

4.     Click on Advanced tab.

5.     Click on Settings under Performance.

6.     Click on Advanced tab.

7.     Click on Change button under Virtual memory.

8.     Select your USB drive.

9.     Click on custom size radio button and give the values as follows;

10.                       Initial Size:1020

11.                       Maximum size:1020

12.                       The size depends upon your free memory capacity of your pen drive. So you can change this limit according to your pen drive size.

13.                       Click on Set button, then click on OK.

14.                       Now you have to restart the computer with pen-drive inserted. The speed of your computer will be increased.

Are you using windows 7 then start doing this (by given steps)