PerfectDisk® 8 vs. Vista Built-in Defragmenter
  Mouse over features for details
FeaturePerfectDisk 8Windows Vista
Central management console
Flexible and Powerful Scheduling Options
Limited Scheduling Options
Easily Viewable and Detailed Fragmentation Information
Fragmentation information only available via command line tool
Patented file placement strategy
Single-pass defragmentation of files
Single-pass defragmentation of free space
Patent-pending Resource Savertm technology to speed defragmentation
Ability to defragment drives with minimal free space
Faster subsequent defrag runs
Defragments Master File Table (MFT)
Completely defragments all NTFS metadata
Intelligent Screen Saver mode
Defragments directories
NTFS only
Defragments Hibernate file
User defined thresholds
AutoUpdate capabilities
Full-Featured Command line support
Defragments multiple drives at the same time
Disk Trending
CPU and disk I/O throttling
Single File Defrag
Consolidate Free Space Defrag
Installation without User Interface
Designed for multi-terabyte drives
Defragment without Administrative Rights
Integration with Active Directory