Improve overall system performance. With a clean Registry, Windows and
applications will be able to get needed data from the registry in a more
efficient manner.
Reduce the amount of time it takes your system to boot. By not needing to load
"empty" registry entries at startup, Windows will take less time to start.
Save memory by cleaning the registry. By reducing the overall size of the
registry, more memory will be available for other applications, reducing the
likelihood that your system will need to resort to using Virtual Memory
(Virtual Memory is much slower than physical memory).
Protect your privacy by permanently erasing previously deleted entries.
Confidential information in deleted registry entries will no longer be stored
on your system.
Prevent registry corruption by building a fresh copy of the registry.
Rebuilding a fresh copy of your registry on a regular basis will greatly
decrease the chances of your registry becoming corrupted, a situation that
could cause programs to behave unpredictably or even prevent Windows from
starting at all.
Certain corrupt registry entries could cause applications or the operating
system to retrieve invalid information about your system or important system
files, or cause it to fail to find that information altogether. Any of these
undesirable outcomes could in some cases cause applications or the operating
system to behave erratically, freeze, or crash.