lshw B.02.20 (The man file)

lshw (Hardware Lister) is a small tool to provide detailed informaton on the
hardware configuration of the machine. It can report exact memory
configuration, firmware version, mainboard configuration, CPU version and
speed, cache config uration, bus speed, etc. on DMI-capable x86 systems.

http://www.ezix.org/software/lshw.html