Install x86info by entering the following commands in the terminal:
sudo apt update sudo apt install x86info
Description:
Display diagnostic information about i386 compatible CPUs
x86info displays diagnostic information about the CPUs fitted to i386 compatible systems. This includes information on the CPU cache configuration, speed and supported features. . Some features require the kernel cpuid driver to be available.
Version: 1.31~pre0.8052aabdd159bc9050e7dc264f33782c5acce05f-1build1
Section: universe/admin