Windows defrag vs. Smart Defrag

Hi, I have been using the windows 7 from last few years and I am being always curious at knowing all the new things, so recently I came across the fragmentation word, actually I don’t know what is it actually. But after searching the internet I got some idea about that, but I would like if someone told me about this, and from the same source I got that there are different third part software as well for doing the same thing, and among them one is smart defrag, so my question is like what is the difference in both of them?
See, I don’t know what is the basic difference but one thing is sure that the software would be off course good if you compare it with the windows defragmentator, because first of all they all meant to be designed to work only with these functions, as they all have very good capability of fegragmenting the disk space. And off course the speed is too good in the smart defrag. I have once tried to defrag using the windows by default defrag, but it consumes too much time doing this.

The above mentioned software is one of the best software for defragmentation. See I would like to tell you some of the features of the smart defrag.

1- Tremendously speedy and well-organized Defragmentation
2- Intended for Top Disk routine
3- Provides Automatic Defragmentation
4- It has included Boot Time Defrag Technology

If you are planning to defrag your HDD then I would recommend you to use this software only as there are too many new feature included as mentioned by the above user, along with that it has a booster through which you can fasten the process of de-fragmentation. And the main feature that I like the most is like we don’t have to bother about it every time as we need to use the windows defrag manually while this work automatically, and off course it will consume less time than the windows
Smart Defrag propose a small number of extras feature, together with a scheduler, through which you can simply set it up to only defrag during downtime on your PC. Thus you can set is to whenever you want it to run, and my recommendation is to set it on start up or even have the application shut down your PC. But I think I have heard that the it is not essential for the windows 7 because the Operating System defrags continually on it's own.