This is the software publisher's description.

UltimateDefrag is revolutionary defrag software that not only lets you defrag, but also considers a more important phenomenon, and that is, the placement of files and folders on your hard drive. With UltimateDefrag you can place the files you want the best performance from onto the faster areas of your hard drive and also get all of your unused data right out of the way and repositioned onto the slower areas of your hard drive in order to make way for the data that you want to place in the “hot” sections of your hard drive where performance is greatest.

UltimateDefrag lets you specify defrag routines right down to the individual file and folder level. No other defragger has previously enabled you to do this to this extent and with this kind of power and flexibility.

UltimateDefrag has a High Performance file section option so that you can get the best possible performance out the programs you want the best performance from, whether it’s a particular game, program or data file. You can move these programs and files ahead of other files and folders to the area of your drive that gives you the best performance.

You choose the files that you want performance from and those that you don’t or let UltimateDefrag do it for you – automatically based on file usage. UltimateDefrag is very powerful yet very easy and intuitive to use. Once you understand the basic concepts and issues that slow your hard drive and principles that result in increased performance you can use UltimateDefrag as a powerful tool to give you hard drive file access that will perform significantly faster than what hard drive manufacturers quote for their hard drive’s performance.

When done right – these principles of performance promotion, that UltimateDefrag enables you to address, all compound like magic to give you performance that you have not previously experienced from your hard drive. After defragging and optimizing with UltimateDefrag – your whole PC will respond with the speed and sprite as when it was new. You’ll see the performance results instantly!

If you decide that you do not want to use all of the advanced options and simply want a fast reliable defrag, then you can also use UltimateDefrag for that purpose only. Simply select the AUTO option and you’ll be enjoying what is probably the fastest and cleverest defrag engine on the market even with its approach to standard defragging which uses efficient “in- place” defragging algorithms for fast, reliable and complete defrags.