How to Find the Speed of Your Computer's CPU

The Central Processing Unit (CPU) is the main chip on your computer's motherboard that carries out the instructions of a computer program. You could determine the speed of your computer's CPU in just a few steps.

...
You could find out the speed of your CPU without opening your computer's case.

Step

Navigate to the "Start" menu. Right-click "Computer" and select "Properties" from the pop-up menu. The System Properties dialog appears. Under "Computer, the name and speed of the CPU appears in gigahertz.

Step

Alternatively, navigate to the "Start" menu and select "Run." The Run dialog appears. Type "msinfo32" (without quotes) in the Run field and click "OK." The System Information window appears. Select "System Summary" from the left pane. Under "Processor" appears the name and processor speed in megahertz.

Step

Alternatively, navigate to the "Start" menu and select "Run." The Run dialog appears. Type "dxdiag" (no quotes) in the Run field and click "OK." Under "Processor" appears the name and processor speed in megahertz.

Step

To check the CPU speed with no operating system installed, press the appropriate key to open the system BIOS while your computer is booting. Depending on the manufacturer, the key is usually "F2" or "Esc." The BIOS information window will display your CPU details.