Friends, here is very coolest trick for speed up your PC.

Steps:

Windows 7 users get Readyboost software by default in their windows. 
But Windows XP users need to install Ebooster and its too easy. Now just follow me up:

Note: Same Procedure is for SD Card.

Windows 7 Users:

1.  Insert your SD card or flash drive in pc.

2.  Select the option "Speed Up My System" in the Autoplay Box.

If Autoplay option doesn't open then goto My Computer> Right Click on your Flash Drive> Properties>Choose Readyboost Tab.


3. Now you can choose between two options:

Dedicate this device to Ready boost: This will use entire memory of Flash drive as RAM.

Use this Device: Using this you can Reserve space for storing data in USB and the space left will be used as RAM.

4. Click OK after choosing your choice.

Your USB is Converted to RAM.
Enjoy!!!!

To UNDONE (goto My Computer-> Right Click on your Flash Drive-> Properties->Choose Readyboost Tab) & Select "Do not use this Device" in the above step and Click OK.


Windows XP:

1. Install Ebooster and Register for Trial Version.

2.  Start Ebooster and Detect your USB device and select the options as in the image below:

Set how much memory you wanna allocate to USB.

5. Click OK.

6. Now a window will pop and select "Start Build Cache".

Now see the Magic of Ebooster.

To UNDONE this firstly select Stop build Cache and then Remove.

Enjoy the Ultimate Speed Of PC :))