They do not test your machine directly ... and could remove debris that is silently damaging your CPU and its processing capabilities. Don't neglect the software side of things, either.

Two new AMD Ryzen gaming CPUs, including the Ryzen 9 9900X3D, look set to make a big impact with massive multi-core and ...

which corresponds to 61% CPU usage in a particular instance. Summarizing the test results, GitHub said, 'We observed that across different CPU families, performance degrades as CPU utilization ...