GPU-Z - GPU-Z is a lightweight system utility designed to provide vital information about your video card...
cpuid - cpuid dumps detailed information about the CPU(s) gathered from the CPUID instruction, and also...
CPU-Z - CPU-Z is a freeware that gathers information on some of the main devices of your system : Processor name and number, codename, process, package, cache levels.
lsdisk - Creates a list of attached disks without root privileges (similar as ldisk -lu, but with extensive...
Speccy - Speccy - find the details of your computer's specs. Great for spotting issues or finding compatible upgrades. Download the latest version free.
I-Nex - system Information tool for Linux