If you want to keep your system fast, be sure to clear out your C:\Windows\Temp folder on occasion. Do it as soon as you boot into the OS, or even through Safe Mode, to ensure that you wipe every last unused file from your drive. In the same vein, don’t use Windows 7′s uninstall function or a program’s default uninstall executable to remove the application from your drive. Instead, use the free Revo Uninstaller utility. This awesome application removes programs using their default uninstall routines, but it also goes one step further by scanning your system and Registry to clean away any and all traces of the program from your hard drive.
Tweaking the operating system to increase its performance helps you achieve better results with the equipment you have, but the surest way to boost your PC’s prowess is to upgrade the hardware. Once you’ve done that, remember to keep your system free from clutter. What good is a performance boost on a messy system anyhow?