In the early 2000s, the race for processor speed created a heat problem. As CPU clock rates climbed, so did power consumption and fan noise. AMD’s answer to this was (CnQ), a technology introduced initially for their Athlon 64 processors. It was one of the first widespread implementations of dynamic voltage and frequency scaling for consumer desktop CPUs.
When properly installed and enabled (via BIOS and Windows Power Options): amd cool n quiet driver