Windows readyboost is a great way to get some more speed out of your computer, whether you have a lot of RAM or not. It is probably best compared to adding RAM. The major difference being that you do not loose the information on the flash disk when you power off your computer.
With readyboost enabled, Windows can now store data that is requested often on the readyboost drive, the pagefile, and also on RAM.
I recently added a USB jump drive to my system and made it available for readyboost to see what some of the benefits were. I noticed the following,
When comparing some of the other ways you can increase the speed of a computer, this one is definitely a good option because of the price. USB jump drives are really cheap and available everywhere. The other great thing is computers usually don't have a shortage of available ports. Another great plus side is you don't even need to shutdown Windows because the drives are plug and play.
Although you should see some performance gains within a couple of hours, give Windows a week to adjust to the new optional storage to make the best use of the drive.
That's it, your all done. Now simply keep on using your computer just like you have in the past. Windows 7 will continue to fine tune this drive to help your system be as fast as possible.