Really its wow feature from Microsoft.I have enjoyed and I am sure you will also guys.
A new memory management technology in Windows Vista, Windows SuperFetch, helps keep the computer consistently responsive to your programs by making better use of the computer’s RAM.
Windows SuperFetch prioritizes the programs you’re currently using over background tasks and adapts to the way you work by tracking the programs you use most often and preloading these into memory.
With SuperFetch, background tasks still run when the computer is idle. However, when the background task is finished, SuperFetch repopulates system memory with the data you were working with before the background task ran. Now, when you return to your desk, your programs will continue to run as efficiently as they did before you left.