CPU-X is a Free software that gathers information on CPU, motherboard and more.
CPU-X is similar to CPU-Z (Windows), but CPU-X is a Free and Open Source software designed for GNU/Linux and FreeBSD.
This software is written in C and built with CMake tool.
It can be used in graphical mode by using GTK or in text-based mode by using NCurses. A dump mode is present from command line.
Note: Not the developer justproviding an appimage
If the link does not work tell me in the comments