Intel and AMD CPU Part Numbers Decoded: Spec Codes, OPNs, and Server Kit Numbers
By the SellUsedRAM bench · Reviewed September 28, 2026 · About SellUsedRAM
A processor is priced by its exact model, and the model is printed on the lid. This page shows where to read it on Intel and AMD chips, what the other numbers mean, and lists the 26 processors we buy with every number each one goes by and what it pays today.
Reading an Intel lid
An Intel Xeon or Core lid carries the processor number, such as Gold 6148, and a line with the spec code: SR3B6 for a production Gold 6148. Intel's product pages list the spec code for each version sold, with a tray ordering code (CD8067303406200 for the Gold 6148) and, where one exists, a boxed code (BX806736148). Any of the three identifies the processor. The other lines on the lid are a batch number shared by many chips and part of the serial number, so they do not tell you the model.
Intel says engineering samples and qualification samples are the same thing, that a part labelled "Intel Confidential" is an engineering sample, and that engineering samples remain Intel's property. If the code on your lid is not in the table below, add a photo of the lid to your quote request.
Reading an AMD lid
AMD prints the ordering part number, the OPN, on the processor and on its packaging, next to the serial number. AMD lists two OPNs for most models: a tray OPN in the form 100-000000xxx and a boxed OPN in the form 100-100000xxxWOF with the same last digits. For the EPYC 7763 they are 100-000000312 and 100-100000312WOF. AMD lists no boxed OPN for the EPYC 9554 or 9654.
Two near-misses matter. A model ending in P, such as the 7543P or 9654P, is a single-socket processor with its own OPN, a different model from the one without the P. AMD also sells EPYC Embedded versions under their own OPNs: 100-000000921 is the Embedded 9654 and 100-000000912 the Embedded 9554, and embedded 7002 and 7003 parts add an E to the server OPN. Neither kind is priced from the table below; send the OPN and we quote it by hand.
Server kit numbers
Lenovo, Cisco, and HPE sell the same processors under their own kit numbers, each listed for particular server models: Lenovo option numbers (4XG7A or 7XG7A), Cisco product IDs (UCS-CPU), and HPE option kits (ending -B21). A kit number identifies the processor inside it, and we price the processor.
Intel Xeon and Core part numbers
| Processor | Cores / threads | Socket | Spec code | Ordering codes | Server kits | We pay |
|---|---|---|---|---|---|---|
| Xeon Gold 6130 Skylake, 2017 | 16 / 32 | LGA3647 | SR3B9 | CD8067303409000 BX806736130 | 7XG7A05587 UCS-CPU-6130 | $1–$2 |
| Xeon Gold 6138 Skylake, 2017 | 20 / 40 | LGA3647 | SR3B5 | CD8067303406100 BX806736138 | 7XG7A05585 UCS-CPU-6138 | $1–$2 |
| Xeon Gold 6148 Skylake, 2017 | 20 / 40 | LGA3647 | SR3B6 | CD8067303406200 BX806736148 | 7XG7A05598 UCS-CPU-6148 | $8–$10 |
| Xeon Platinum 8160 Skylake, 2017 | 24 / 48 | LGA3647 | SR3B0 | CD8067303405600 BX806738160 | 7XG7A05616 UCS-CPU-8160 | $15–$20 |
| Xeon Gold 5218 Cascade Lake, 2019 | 16 / 32 | LGA3647 | SRF8T | CD8069504193301 BX806955218 | 4XG7A37895 UCS-CPU-I5218 | $4–$5 |
| Xeon Gold 6230 Cascade Lake, 2019 | 20 / 40 | LGA3647 | SRF8W | CD8069504193701 BX806956230 | 4XG7A37889 UCS-CPU-I6230 | $15–$16 |
| Xeon Gold 6248 Cascade Lake, 2019 | 20 / 40 | LGA3647 | SRF90 | CD8069504194301 BX806956248 | 4XG7A15892 UCS-CPU-I6248 | $28–$31 |
| Xeon Gold 6252 Cascade Lake, 2019 | 24 / 48 | LGA3647 | SRF91 | CD8069504194401 BX806956252 | 4XG7A15889 UCS-CPU-I6252 | $25–$30 |
| Xeon Platinum 8260 Cascade Lake, 2019 | 24 / 48 | LGA3647 | SRF9H | CD8069504201101 | 4XG7A15887 UCS-CPU-I8260 | $58–$68 |
| Xeon Gold 6338 Ice Lake, 2021 | 32 / 64 | LGA4189 | SRKJ9 | CD8068904572501 | 4XG7A63579 UCS-CPU-I6338 | $348–$435 |
| Xeon Platinum 8358 Ice Lake, 2021 | 32 / 64 | LGA4189 | SRKJ1 | CD8068904572302 | 4XG7A63479 UCS-CPU-I8358 | $150–$200 |
| Core i9-13900K Raptor Lake, 2022 | 24 / 32 | LGA1700 | SRMBH | CM8071505094011 BX8071513900K | $138–$162 | |
| Xeon Gold 6426Y Sapphire Rapids, 2023 | 16 / 32 | LGA4677 | SRMGF | PK8071305120102 | 4XG7A84160 UCS-CPU-I6426Y | $585–$732 |
AMD EPYC and Ryzen part numbers
| Processor | Cores / threads | Socket | Tray OPN | Boxed OPN | Server kits | We pay |
|---|---|---|---|---|---|---|
| EPYC 7302 EPYC 7002 Series, 2019 | 16 / 32 | SP3 | 100-000000043 | 100-100000043WOF | 4XG7A38058 UCS-CPU-A7302 | $44–$54 |
| EPYC 7402 EPYC 7002 Series, 2019 | 24 / 48 | SP3 | 100-000000046 | 100-100000046WOF | 4XG7A63372 | $27–$34 |
| EPYC 7502 EPYC 7002 Series, 2019 | 32 / 64 | SP3 | 100-000000054 | 100-100000054WOF | 4XG7A38048 | $67–$82 |
| EPYC 7702 EPYC 7002 Series, 2019 | 64 / 128 | SP3 | 100-000000038 | 100-100000038WOF | 4XG7A63369 | $200–$250 |
| Ryzen 7 5800X Ryzen 5000 Series, 2020 | 8 / 16 | AM4 | 100-000000063 | 100-100000063WOF | $82–$92 | |
| Ryzen 9 5900X Ryzen 5000 Series, 2020 | 12 / 24 | AM4 | 100-000000061 | 100-100000061WOF | $104–$121 | |
| Ryzen 9 5950X Ryzen 5000 Series, 2020 | 16 / 32 | AM4 | 100-000000059 | 100-100000059WOF | $148–$173 | |
| EPYC 7543 EPYC 7003 Series, 2021 | 32 / 64 | SP3 | 100-000000345 | 100-100000345WOF | 4XG7A63608 UCS-CPU-A7543 | $336–$414 |
| EPYC 7713 EPYC 7003 Series, 2021 | 64 / 128 | SP3 | 100-000000344 | 100-100000344WOF | 4XG7A63613 UCS-CPU-A7713 | $367–$459 |
| EPYC 7763 EPYC 7003 Series, 2021 | 64 / 128 | SP3 | 100-000000312 | 100-100000312WOF | 4XG7A63604 UCS-CPU-A7763 | $560–$636 |
| EPYC 9554 EPYC 9004 Series, 2022 | 64 / 128 | SP5 | 100-000000790 | 4XG7A85816 P53700-B21 UCS-CPU-A9554 | $1,336–$1,695 | |
| EPYC 9654 EPYC 9004 Series, 2022 | 96 / 192 | SP5 | 100-000000789 | 338-CKMD P53696-B21 4XG7A85815 UCS-CPU-A9654 | $862–$1,077 | |
| Ryzen 9 7950X Ryzen 7000 Series, 2022 | 16 / 32 | AM5 | 100-000000514 | 100-100000514WOF | $134–$158 |
Every number here was checked against the maker's own documentation, or against two independent listings that agree. Payouts are read from the Payout Index when the page loads.
FAQ
Does a server kit number change the price?
No. The kit number tells us which processor it is, and the payout follows the processor.
My processor is not in the table. Do you still buy it?
Often, yes. The table holds the processors we list, not everything we buy. Paste the model and the code from the lid into the quote form, or add a photo of the lid.
What stops a processor from being bought?
Bent pads or a damaged socket, which mean it cannot be resold as working. Thermal paste residue and normal pull wear are fine, and every working pull is POST-tested on our bench before payment.
Can one lot mix processors, memory, and drives?
Yes. Send one list and we price every line.
Number decoded? The quote form turns it into a firm figure within four business hours. Server lots go through the bulk desk, priced line by line against the same index.