Use pen drive as RAM ?

It created quite a stir when it was reported that you can use Cheap flash memory to add to you RAM and increase the performance !

http://www.microsoft.com/windows/products/windowsvista/features/details/readyboost.mspx

http://en.wikipedia.org/wiki/ReadyBoost

Using flash memory is an exciting prospectus, making memory cheaper and faster. But as long as magnetic disc (hard disk) are much cheaper that any other memory we will require a temporary faster memory such as RAM which loosed data when powered down.

An exciting new technology which combines the speed of Ram yet doesn't lose date when powered down is M RAM