Use the Performance tab in Task Manager to view how your computer's central processing unit (CPU)is being used by Windows and other programs running on your computer.

  1. Open Task Manager by right-clicking the taskbar and then clicking Task Manager.

  2. Click the Performance tab.

Picture of performance graphs
Performance graphs

The top two graphs show how much CPU is being used, both at the moment and for the past few minutes. (If the CPU Usage History graph appears split, your computer either has multiple CPUs, a single dual-core CPU, or both.)

A high percentage means that the programs or processes that are running are requiring a lot of CPU resources, which can slow your computer. If the percentage appears frozen at or near 100%, then a program might not be responding. For more information, see Exit a program that is not responding.

To view advanced information about CPU utilization, at the bottom of the Performance tab, click Resource Monitor. Administrator permission required If you are prompted for an administrator password or confirmation, type the password or provide confirmation. Resource Monitor shows information similar to that shown in Task Manager, but it provides a greater level of detail. For more information about Resource Monitor when you are using it, click Help, and then click Resource Monitor Help.

Determine what kind of CPU is installed on your computer

  1. Open System by clicking the Start button Picture of the Start button, clicking Control Panel, clicking System and Maintenance, and then clicking System.

  2. In the System section, under Processor, your can view your computer's CPU speed and type.