Performance Monitor tracks your use of RAM, CPU, the Internet, and
your hard disk, and displays the information in four small colored
boxes on your desktop. The information is displayed in somewhat
hard-to-read graph form on four small colored boxes. To get
details, hover your mouse over a box, and you’ll get actual usage
statistics, such as the percentage of your CPU currently being
The program is well-thought out; for example, if you have a
multi-core CPU, it shows you the usage of each core individually.
Considering that Performance Monitor is free, if you have a need
for a system monitor, it’s certainly worth the download.
Note: When I used this program under Windows Vista, I
received an error message when it launched. However, the program
worked without any problems, despite the message.