Even without the code, we know how CPU-Z gathers its data. It functions as a . Internally, it likely uses the following methods: What is CPU-Z and how to use it
A reverse engineer (pseudonym "InstLatx64") published a decompiled snippet in 2021 that looks like this: cpu-z source code
CPU-Z was first released in 1999 by CPUID, a company founded by Franck Yuldamine, a French developer. The software was initially designed to provide information about the CPU, including its name, speed, and features. Over the years, CPU-Z has evolved to include support for various CPU architectures, as well as additional features such as GPU detection and memory benchmarking. Even without the code, we know how CPU-Z gathers its data