On freebsdhowtos a short howto is written to find out which hardware is installed in your FreeBSD machine.
From the howto:
[quote]Dmidecode is a tool or dumping a computer’s DMI (some say SMBIOS) table
contents in a human-readable format. The output contains a description of the
system’s hardware components, as well as other useful pieces of information
such as serial numbers and BIOS revision.[/quote]
install it from /usr/ports/sysutils/dmidecode
just run it without any options:
[shell]root@bsdfreaks ~ # dmidecode
sample output (stripped):
BIOS Information
        Vendor: Phoenix Technologies, LTD
        Version: ASUS PCH-DL ACPI BIOS Revision 1004
        Release Date: 09/29/2004
Processor Information
        Socket Designation: Socket 604
        Type: Central Processor
        Family: Xeon
        Manufacturer: Intel
        Signature: Type 0, Family 15, Model 2, Stepping 9
        Flags:
                FPU (Floating-point unit on-chip)
        Version: Intel Xeon(tm)
        Voltage: 1.4 V
        External Clock: 134 MHz
        Max Speed: 3200 MHz
        Current Speed: 2814 MHz
        Status: Populated, Enabled
        Upgrade: ZIF Socket
        L1 Cache Handle: 0x000B
        L2 Cache Handle: 0x000D
        L3 Cache Handle: 0x000F
[/shell]