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UltraDefrag performs the following functions:

* RAM disk defragmentation. The process is in kernel mode on the optimal algorithm
* Compact, written entirely in C
* A pleasant and functional graphical user interface
* Safety guarantee, since the work done with the files in their native Defrag API from Microsoft
* Ease of use
* Create HTML report about disk fragmentation
* Ability to add / delete files using filters

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For 32-bit Windows: NT4.0, 2000, XP, Vista, 7 - Server NT4.0, 2000, 2003, 2008
For 64-bit Windows: x64 Editions of XP, Vista, 7 - Server 2003, 2008, 2008 R2
For 64-bit Windows running on Intel Itanium processor.