How to Identify My Intel® Xeon® Processor Markings for Warranty Requests
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| Note | Use the Intel® Processor Identification Utility – Windows* version to identify the specifications of your processor. Also, review the sockets that are supported by your processor. |
The following information helps you identify server processor markings. Processor markings let customer support know if you are eligible for a warranty exchange.
| Note | Intel® Xeon® Scalable Processors are dictated by the manufacturer. |
Where do I find the processor markings?
All Intel® Xeon® Scalable Processors have markings inscribed on the top of the processor package. The most recent Intel® Xeon® Scalable Processors packages and markings are described here.
The serial number is required for warranty processing. The serial number of a processor is typically a combination of the finished process order (FPO) number and the assembly test process order (ATPO) number. If the ATPO Number is not present, provide the FPO number.
If you have the FPO number and ATPO numbers in hand, check your warranty coverage online at the Warranty Center.
If you are not sure about the processor package or socket for your processor, collect the processor markings and Contact Support.
Install Steps Video (Steps are identical to older models): How to Install an Intel® Xeon® Processor
4th Generation Intel® Xeon® Scalable Processors
On the 4th Generation Intel® Xeon® Scalable Processors, a change was made on the markings, as in the example below:
| Note | These are only examples for orientation purposes. The number will not match any Production product. |
| Scan PPIN | Scan for Vis_ID |
 | M26P8K1400671 |
For Boxed 4th Generation Intel® Xeon® Scalable Processors, the Serial Number on the box will be matching the Serial Number engraved on the CPU:
There is also a 5 number digit on the internal side of the 4th Generation Intel® Xeon® Scalable Processors which is used for internal control and will not match any Box information.
| Scan Backside ID |
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CPU Carries Description
LGA 4677 - 4th Gen Intel® Xeon® Processor
| Line 1 | Copyright Marks |
| Line 2 | Processor Family |
| Line 3 | sSpec # |
| Line 4 | Finished Process Order (FPO) |
| Line 5 | 2D Matrix - S/N + sSPEC |
| Note: | 3rd gen and 4th gen Xeon CPUs Sockets are not compatible. 3rd gen Xeon CPUs in LGA4189-4/5 socket vs 4th gen Xeon CPUs in LGA4677 socket (Socket E) |
LGA 3647—Intel® Xeon® Processor
| Line 1 | Copyright Marks |
| Line 2 | Processor Family |
| Line 3 | Processor Number |
| Line 4 | sSpec # / CPU Speed |
| Line 5 | Finished Process Order (FPO) |
| Line 6 | Partial Serial Number |
| Line 7 | Assembly Test Process Order (ATPO) Serial Number |
Serial Number = Line 5 (for example, L605G225)
sSpec = Line 4 (for example, SR3GD)
| Note | Scanner for 2D Matrix is needed to read the Assembly Test Process Order (ATPO) Serial Number on Line 6. |
LGA 1151—Intel® Xeon® Processor
| Line 1 | Processor Family |
| Line 2 | Processor Number |
| Line 3 | sSpec # / CPU Speed |
| Line 4 | Finished Process Order (FPO) |
| Line 5 | Assembly Test Process Order (ATPO) Serial Number |
Serial Number = Line 4 (for example, L838C218)
sSpec = Line 3 (for example, SC3BP)
| Note | Scanner for 2D Matrix is needed to read the Assembly Test Process Order (ATPO) Serial Number on Line 5. |
LGA 1150—Intel® Xeon® Processor
| Line 1 | Copyright Marks |
| Line 2 | Trademark and Branding + Processor Family (for example, Xeon) + |
| Line 3 | sSpec # + CPU Speed |
| Line 4 | Country of Manufacture |
| Line 5 | Finished Process Order (FPO) |
Serial Number = Line 5 (for example, L407A226)
sSpec= Line 3 (for example, SR182)
LGA 1356—Intel® Xeon® Processor
| Line 1 | Copyright Marks |
| Line 2 | Trademark and Branding + Processor Family (for example, Xeon) + |
| Line 3 | sSpec # + CPU Speed |
| Line 4 | Country of Manufacture |
| Line 5 | Finished Process Order (FPO) |
| Line 6 | Assembly Test Process Order (ATPO) |
| Line 7 | Partial Serial Number |
Serial Number = Line 7 (for example, 3B0977)
sSpec = Line 3 (for example, SR8LM)
LGA 2011—Intel® Xeon® Processor
| Line 1 | Copyright Marks |
| Line 2 | Trademark and Branding + Processor Family (for example, Xeon) + |
| Line 3 | sSpec # + CPU Speed |
| Line 4 | Country of Manufacture |
| Line 5 | Finished Process Order (FPO) |
| Line 6 | Lot Number + Serial Number |
Serial Number = Line 6 (for example, 3Q244225B0709)
sSpec = Line 3 (for example, ST0BR)
LGA 1366—Intel® Xeon® Processor
| Line 1 | Copyright Marks |
| Line 2 | Trademark and Branding + Processor Family (for example, Xeon) + |
| Line 3 | sSpec # and Manufacturing Country |
| Line 4 | CPU speed/L2 cache size/Bus speed |
| Line 5 | Finished Process Order (FPO) |
| Line 6 | Serial Number |
Serial Number = Line 6 (for example, 4102)
sSpec = Line 3 (for example, S02BG)
LGA 1155—Intel® Xeon® Processor
| Line 1 | Copyright Marks |
| Line 2 | Trademark and Branding + Processor Family (for example, Xeon) + |
| Line 3 | sSpec # + CPU Speed |
| Line 4 | Country of Manufacture |
| Line 5 | Finished Process Order (FPO) |
| Line 6 | Assembly Test Process Order (ATPO) |
Serial Number = Line 5 + Line 6 (for example, M384N098- 7504)
sSpec= Line 3 (for example, SB0BC)
LGA 1156—Intel® Xeon® Processor
| Line 1 | Copyright Marks |
| Line 2 | Trademark and Branding + Processor Family (for example, Xeon) + |
| Line 3 | sSpec # + CPU Speed |
| Line 4 | Country of Manufacture |
| Line 5 | Finished Process Order (FPO) |
| Line 6 | Assembly Test Process Order (ATPO) |
Serial Number = Line 5 + Line 6 (for example, P090T875-6382)
sSpec = Line 3 (for example, SC0QF)
LGA 775—Intel® Xeon® Processor
| Line 1 | CPU speed/L2 cache size/Bus speed |
| Line 2 | Processor Family (for example, Xeon) |
| Line 3 | sSpec # and Manufacturing Country |
| Line 4 | Processor number (for example, X3220) |
| Line 5 | Finished Process Order (FPO) |
| Line 6 | Assembly Test Process Order (ATPO) |
| Line 7 | Partial Serial Number |
Serial Number = Line 5 + Line 6 + Line 7 (for example, 2822B890-1Z688177B9996)
sSpec = Line 3 (for example, SL028)
LGA 771—Intel® Xeon® Processor
| Line 1 | CPU speed/L2 cache size/Bus speed |
| Line 2 | Processor Family (for example, Xeon) |
| Line 3 | sSpec # and Manufacturing Country |
| Line 4 | Copyright Marks + Platform Compatibility Guide |
| Line 5 | Finished Process Order (FPO) |
| Line 6 | Assembly Test Process Order (ATPO) |
| Line 7 | Partial Serial Number |
Serial Number = Line 5 + Line 6 + Line 7 (for example, 7823N808-8900186H9806)
sSpec = Line 3 (for example, SL022)
| Related topics |
| Intel® Processor Identification Utility – Support information |
| Operating System Compatibility and Intel® Xeon® Processors |