Perfgraph is a tiny tool to display basic information about the performance of the base computer components on the Windows taskbar. The program is able to inform the user in real time about the degree of use of the processor and its individual cores (maximum 8), RAM, CPU temperature, chipset and hard disk, and fan speed. It also allows you to monitor Internet bandwidth (via SNMP protocol) and pinging remote hosts.

Perfgraph works within the explorer.exe system process, presenting all the data in the form of fully configurable charts. The user can adjust their color, font size and refresh rate (from 0.02 second to hour).