To check the clock speed of your CPU, you need to: Click on the Start menu icon. Search for System Information. Look for Processor. The number next to GHz is your clock speed.

The CPU speed plays a role in overall system performance, but it's not the only factor to consider. ... It's easy to test your CPU's temperature. Related: How to Check CPU Usage on a Mac.

As the test runs, compare the temperature to the CPU's tolerances to avoid damage and stop the test with the command "killall burnK7" if the CPU gets too hot or when you are done testing.