IObit Smart Defrag Disk fragmentation is generally main cause of slow and unstable PC performance. IObit SmartDefrag helps defrag your hard drive most efficiently. With "Install it and forget it" feature, IObit SmartDef
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IObit Smart Defrag Description

FREE, light, and stable disk defragment tool designed for maximum hard drive performance Smart Defrag is a FREE, light, and stable disk defragment tool designed for maximum hard drive performance. Based on IObit latest disk defrag engine and "Boot Time Disk Defrag" technology, Smart Defrag not only provides defragmentation, like any typical disk defragmenter can do, but also intelligently streamlines your files based on using frequency, thus accelerating disk speed for faster data access! With the unique Deep Analyze technology, it smartly clean junk files before defragmentation to save more disk space for you. Being the first Disk Defragmenter that fully supports Windows 8/8.1 Metro Apps, Smart Defrag works fast, automatically and quietly in the background and is a disk defragmenter suitable for large hard drives.

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