Using USB to boost your PC: Intelligent computing Image credit
Having 2 GB RAM and want to Run heavy program that usually hangs and don’t respond on your PC. Try this best alternative on your PC with Windows 7 along with 4 GB USB flash drive to boost its performance.

Step 1:

Insert a 4GB Pen Drive

Insert Pen drive: Intelligent Computing

Step 2: Go to Properties by Right Clicking

Editing the properties of USB to ready boot: Intelligent Computing

Step 3: 

Select Tab Ready Boost and Option Dedicate this device to 

Ready Boost

Now Your 4GB Pen Drive Will Add 1 GB of RAM to Your System

but it will not be available for User File Until Properties will be 

changed to Normal.