Defraggler
A majority of the tools we have for defragging will only let us defrag the entire drive and never just a portion of a drive. With Defraggler, you are given a choice to defrag just a part of your drive in order to get the best results.
Defraggler is an all-free program that helps to reorganize your RAM and makes sure that computer is performing efficiently. It's an easy to download software that also contains a simple interface to use.