Hardware Lister: lshw

RPMs: http://dag.wieers.com/packages/lshw/

Sample Output: 
root# lshw |more
x.domain.com
    description: Desktop Computer
    product: HP dx5150 SFF(PE680AV)
    vendor: Hewlett-Packard
    serial: 2UA5450KR5
    width: 32 bits
    capabilities: smbios-2.4 dmi-2.4
    configuration: boot=normal chassis=desktop uuid=80C9A306-F6BE-1010-B4A0-AC7D0633B1F2