When we use large-scale software or play games, we will find that the computer becomes hot and slows down. Even a new machine will inevitably not heat up. At this time, the CPU core speed has increased, so how to test the CPU core speed?

1. Insert the u boot USB disk into the computer USB interface, restart the computer, press the startup shortcut key quickly and continuously when the startup screen is displayed, enter the u startup menu main interface, select [03] to run u startup win03pe enhancement version and press Enter,

2. After entering the pe system desktop, click "Start--Program--Hardware Detection--CPuz Processor Detection",

　3. Open the cpu-z tool page. We can know the current CPU running speed of the computer through "Core Speed". If the core speed is too high, then we need to consider setting the computer power saving mode or cooling the computer.

The cpu core speed is a changing value, because when using a computer, the cpu changes frequency according to the task, so it is normal for the core speed to change.