During installation, Windows 7 assigned your computer a Windows Experience Index.
This index is a relative rating of your computer’s capabilities with regard to its:
• Physical memory (RAM)
• General graphics
• Gaming graphics
• Primary hard disk
To assign the Windows Experience Index, Windows 7 determines:
• The number of processors/processor cores installed on your computer and the processor type
• The number of calculations per second that your computer’s processor can perform
• The total amount of physical memory installed on your computer
• The number of memory operations per second that your computer’s memory can perform
• The total amount of graphics memory installed on your computer
• The relative performance of your computer’s graphics adapter
• The data transfer rate of your computer’s primary hard disk
These performance metrics help Windows 7 determine the relative performance of your computer. You can view your computer’s Windows Experience Index and the related subscores by completing the following steps:
1. Click Start and then click Control Panel.
2. In the Control Panel, select System and Security.
3. Under the System heading, click Check the Windows Experience Index.
4. Your computer’s performance scores are listed by component in the Performance Information and Tools console.
Source of Information : OReilly Windows 7 The Definitive Guide (10-2009) (ATTiCA)
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