Dmidecode - Dmidecode reports information about your system's hardware as described in your system BIOS...
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.
lsscsi - Uses information in sysfs (Linux kernels 2.6.
Speccy - Speccy - find the details of your computer's specs. Great for spotting issues or finding compatible upgrades. Download the latest version free.
inxi - Inxi is a system information script that can display various things about your hardware and...
AIDA64 - AIDA64 is a system information, diagnostics and benchmarking solution for Windows PC.