Full Review

When the Windows Defragmenter tool won't do the job, it's time to bring out the heavy artillery. Perfect Disk, the self-proclaimed "Cadillac of Defraggers," is designed to defragment large and complex environments and optimize drives with as little as 5% free space. Its single-pass consolidation of free space slows process of refragmentation, making your drive healthier and future defragmenting passes quicker.

The underlying mechanism of this utility is that it perform the all-important function of moving system files to the beginning of the partition, thus freeing up much more of the available space.

Notable features include automatic background defragmentation, customizable scheduling options, boot time system file defragmentation, and selected files defrag.

So, if you have tried other basic defragment tools and you want to try out a powerful alternative than this is the one you have to go for.