PC-Config is a small DOS based sysinfo software which gives you a quick but complete overview over an unknown computer´s hardware.

Main features:

complete hardware detection including CPU, CPU Speed, RAM size, HDD size, -brand, -version, VGA chip, PCI slot cards...

finds mainboard vendor (ASUS, Gigabyte, Biostar ...)*

has details SDRAM info (maker, speed, size, ECC...)

runs from DOS, fitts on a DOS boot disk to test even Linux/OS2 machines or barbones without HDD
can be driven by commandline parameter and redirect all output to file.

Limitations: Product no longer updated or supported and now freeware.