desde /proc/cpuinfo se saca mucha informacion valiosa del micro, pero necesito saber el OPN (Ordering Part Number) y ahi no sale nada

haria falta aclarar que la caja del micro no existe más, y no es viable apagarla y sacarle el cooler, porque es un servidor (ubuntu 8.04 server) y esta en uso 24/7

de donde puedo sacar esa info ???

Hola, probaste con dmidecode? (al menos en Ubuntu 8.04 me viene)
kiuman@kiubuntu:~$ sudo dmidecode --type 4
# dmidecode 2.9
SMBIOS 2.3 present.

Handle 0x0400, DMI type 4, 32 bytes
Processor Information
Socket Designation: Microprocessor
Type: Central Processor
Family: Pentium 4
Manufacturer: Intel
ID: 62 0F 00 00 FF FB EB BF
Signature: Type 0, Family 15, Model 6, Stepping 2
Flags:
FPU (Floating-point unit on-chip)
VME (Virtual mode extension)
DE (Debugging extension)
PSE (Page size extension)
TSC (Time stamp counter)
MSR (Model specific registers)
PAE (Physical address extension)
MCE (Machine check exception)
CX8 (CMPXCHG8 instruction supported)
APIC (On-chip APIC hardware supported)
SEP (Fast system call)
MTRR (Memory type range registers)
PGE (Page global enable)
MCA (Machine check architecture)
CMOV (Conditional move instruction supported)
PAT (Page attribute table)
PSE-36 (36-bit page size extension)
CLFSH (CLFLUSH instruction supported)
DS (Debug store)
ACPI (ACPI supported)
MMX (MMX technology supported)
FXSR (Fast floating-point save and restore)
SSE (Streaming SIMD extensions)
SSE2 (Streaming SIMD extensions 2)
SS (Self-snoop)
HTT (Hyper-threading technology)
TM (Thermal monitor supported)
PBE (Pending break enabled)
Version: Not Specified
Voltage: 0.2 V
External Clock: 800 MHz
Max Speed: 4000 MHz
Current Speed: 3000 MHz
Status: Populated, Enabled
Upgrade: ZIF Socket
L1 Cache Handle: 0x0700
L2 Cache Handle: 0x0701
L3 Cache Handle: Not Provided

kiuman@kiubuntu:~$

Exitos!
Baii

Hmm, me quede pensando sobre esto entonces lo probe hoy en un server real (el post anterior fue ejecutado en mi pc nomas) a ver si los servers reales tienen mas info (ya que en mi pc no dice part number).
Aca la salida de un rack server HP ProLiant DL320:

[root@smail ~]# dmidecode --type 4
# dmidecode 2.7
SMBIOS 2.3 present.

Handle 0x0400, DMI type 4, 40 bytes.
Processor Information
        Socket Designation: Proc 1
        Type: Central Processor
        Family: Xeon
        Manufacturer: Intel
        ID: 4A 0F 00 00 FF FB EB BF
        Signature: Type 0, Family 15, Model 4, Stepping 10
        Flags:
                FPU (Floating-point unit on-chip)
                VME (Virtual mode extension)
                DE (Debugging extension)
                PSE (Page size extension)
                TSC (Time stamp counter)
                MSR (Model specific registers)
                PAE (Physical address extension)
                MCE (Machine check exception)
                CX8 (CMPXCHG8 instruction supported)
                APIC (On-chip APIC hardware supported)
                SEP (Fast system call)
                MTRR (Memory type range registers)
                PGE (Page global enable)
                MCA (Machine check architecture)
                CMOV (Conditional move instruction supported)
                PAT (Page attribute table)
                PSE-36 (36-bit page size extension)
                CLFSH (CLFLUSH instruction supported)
                DS (Debug store)
                ACPI (ACPI supported)
                MMX (MMX technology supported)
                FXSR (Fast floating-point save and restore)
                SSE (Streaming SIMD extensions)
                SSE2 (Streaming SIMD extensions 2)
                SS (Self-snoop)
                HTT (Hyper-threading technology)
                TM (Thermal monitor supported)
                PBE (Pending break enabled)
        Version: Not Specified
        Voltage: 1.4 V
        External Clock: 800 MHz
        Max Speed: 4800 MHz
        Current Speed: 3200 MHz
        Status: Populated, Enabled
        Upgrade: ZIF Socket
        L1 Cache Handle: 0x0710
        L2 Cache Handle: 0x0720
        L3 Cache Handle: 0x0730
        Serial Number: Not Specified
        Asset Tag: Not Specified
        Part Number: Not Specified

Handle 0x0406, DMI type 4, 40 bytes.
Processor Information
        Socket Designation: Proc 2
        Type: Central Processor
        Family: Xeon
        Manufacturer: Intel
        ID: 00 00 00 00 00 00 00 00
        Signature: Type 0, Family 0, Model 0, Stepping 0
        Flags: None
        Version: Not Specified
        Voltage: 1.4 V
        External Clock: 200 MHz
        Max Speed: 4800 MHz
        Current Speed: Unknown
        Status: Unpopulated
        Upgrade: ZIF Socket
        L1 Cache Handle: 0x0716
        L2 Cache Handle: 0x0726
        L3 Cache Handle: 0x0736
        Serial Number: Not Specified
        Asset Tag: Not Specified
        Part Number: Not Specified

[root@smail ~]#
Y me llamo la atencion que diga "Part Number: Not Specified".
Loco, no?
Baii