what is the cpu speed
Why You Canât Just Compare Clock Speeds. CPU clock speed, or clock rate, is measured in Hertz â generally in gigahertz, or GHz. A CPUâs clock speed rate is a measure of how many clock cycles a CPU can perform per second. For example, a CPU with a clock rate of 1.8 GHz can perform 1,800,000,000 clock cycles per second. This seems simple on its face.