How to get the serial number of CPU or BIOS ?

Posted on 2000-03-01
Last Modified: 2010-04-04
I remember, somebody tell me how to get the serial number of NIC, but now, I want to get the serial number of CPU, or BIOS.
How ?
Question by:Rakin
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LVL 15

Expert Comment

ID: 2572448
Which one? CPU or BIOS?

The s/n for CPUs are only available on AMD Athlon, Intel P-III and above, and the code can be found at
The greatest advantage of the CPU s/n is that it is unique for each CPU. It´s not, however, available on most CPUs in the market today (most AMDs, P-I, P-II, etc.. only on P-3 and Athlon).

As of the BIOS s/n, it is not necessarily unique. Two motherboards of the same model that were manufactured by the same company, that have the same BIOS and chipset, WILL have the same serial number. Thus it is not an infalible safety measure. You can download a component that retrieves the BIOS s/n (TASCPUInfo) from my site:



LVL 15

Accepted Solution

simonet earned 200 total points
ID: 2572468

Here's a more accurate URL for the CPU s/n on Intel's site:



Author Comment

ID: 2576849
If that CPU is not AMD Athlon, Intel P-III and above, are they not serial number?
it seem have serial number too.
LVL 15

Expert Comment

ID: 2583060
No. If the CPU is not one of the above (Athlon, P-3 and above), they do not have serial numbers.


Expert Comment

ID: 2609808
they do have serial numbers, you just cant obtain them from software.

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