We love Windows 7 Aero glass and such special effects as Aero peek, Aero snap, and thumbnail previews on the taskbar. However, an older computer with a slower processor or an underpowered netbook (something running an Atom Z520 or Z530 CPU, for example) might take a performance hit in exchange for this eye candy. To disable Windows 7 special effects:

- Right-click on the Computer button or icon and select Properties. The System window appears.
- Select Advanced System Settings. The System Properties window appears.
- Click Settings under Performance.
- Select "Adjust for best performance" if you want to disable all special effects. Otherwise, select Custom and try disabling some (but not all) special effects to see if performance improves.
- Click OK.
Get more Windows 7 time-saving tips here!