Disk defragmentation on a schedule

Infrequent disk defragmentation leads to an inefficient layout of files on the hard disk, which can slow PC performance. Windows Vista includes a new disk defragmenter that runs in the background and automatically defragments the hard disk as need arises. The new disk defragmenter no longer needs to complete its work in a single session—it can defragment incrementally, whenever the computer is idle.
Faster access to DVDs and musicWindows Vista includes a new feature called Windows HotStart, which is ideal for use with media and entertainment on mobile PCs. Mobile PC manufacturers can now include a separate button for media playback that starts up right to Windows Media Player 11 or Windows Media Center. So when you use your mobile PC on a long flight, HotStart zips you right to DVDs or music, saving both time and battery life.
Diagnosing performance issuesBuilt-in performance diagnostics can detect and self-correct many performance issues. Performance diagnostics provide instrumentation and services for both user-driven and tool-driven diagnoses of common problems, including glitchy media playback, slow system or program starts, and network-related delays. Built-in performance diagnostic tools track how long it takes to execute common activities, analyze performance declines, and display results in the Performance Center, where users can then take action to remedy the problem.
Performance gains from Windows Vista and new hardwareToday's PC marketplace has an extraordinarily wide range of PC hardware. To take advantage of the varied landscape, Windows Vista scales its features in a way that makes the best use of available hardware. For example, if a Windows Driver Display Model graphics card is present, Windows Vista shows the Windows Aero interface. If a compliant graphics card is not present, Windows Vista will run but will not show the Aero interface.
The same is true of other performance features in Windows Vista, too. Having the right hardware unlocks some of the most innovative performance features in Windows Vista: Windows ReadyBoost and Windows ReadyDrive.