Disk SpeedUp is a defrag tool aims to analyse and optimise your PC to deliver its best possible performance.

The program will appear to defrag drives quicker than most of the competition, however in part that seems to be because it does considerably less work. By default, for instance, Disk SpeedUp will only defrag files if they're smaller than 300MB, and have more than two fragments, and at least one of those fragments are smaller than 80MB (although, to be fair, you can alter this in the Settings dialog).

To see the effect of this, we defragged some drives in Disk SpeedUp, and the program seemed to run very quickly. But then we checked the drives with another tool, and were told they were still anything up to 9% fragmented: the job was far from complete.

Still, it's true that these remaining fragments probably wouldn't have a great deal of effect on our PCs performance. And Disk SpeedUp does have plenty of configuration options that you can use to optimise its results further: so you can tell it to, say, exclude particular files from being defragmented, or move files that haven't been accessed in the last month to the slowest area of the drive, perhaps helping to improve access times for everything else.