Name: HP 16GB (1x16gb) 2Rx4 Pc3-12800r DDR3-1600MHZ RDIMM
Brand: HP
SKU: 672631-B21

672631-B21 ✓ Verified by PartsTable

HP · MEMORY · RDIMM

WHAT YOU NEED TO KNOW

Memory is a hot market right now. DDR5 and DDR4 are extremely volatile with data centers driving availability to extreme lows. Always validate machine type and model. Remember: all RAM is Hynix, Samsung, or Micron underneath OEM labels — use that to find alternatives. Key checks: Check OEM alternatives — all RAM is Hynix/Samsung/Micron underneath. Double-check what you're quoting in volatile market.

HOT market — DDR5/DDR4 extremely volatile

PRODUCT OVERVIEW

HP 16GB (1X16GB) 2RX4 PC3-12800R DDR3-1600MHZ RDIMM

HP 16GB (1X16GB) 2RX4 PC3-12800R DDR3-1600MHZ RDIMM. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 7025-01-618-6200, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS

MEMORY→ RDIMM→ 672631-B21

NSN: 7025-01-618-6200
FSC: 7025
CAGE: 28480 — HEWLETT-PACKARD COMPANY DBA HP (USA)

SPECIFICATIONS

Part Number	672631-B21
Manufacturer	HP
Interface	DDR3
Capacity	16GB
Speed	1600MHz
NSN	7025-01-618-6200

COMPONENT DIAGRAM

KEY FEATURES

•

DDR3 Interface

•

16GB Capacity

•

1600MHz Speed

•

DDR3 RDIMM

TYPICAL APPLICATIONS

Server memory expansion for virtualization workloads
Database performance optimization (in-memory computing)
VDI and remote desktop session hosting
High-performance computing (HPC) clusters
Mail server and collaboration platform scaling
Application server tier expansion

VERIFIED SUBSTITUTES & CROSS-REFERENCES 3

684031-001Compatible

HP 16Gb PC3-12800R 1600Mhz ECC REG DR x4 CAS-11 DIMM - Intel v1 - G8

compatible

672612-081Compatible

HP 16Gb PC3-12800R 1600Mhz ECC REG DR x4 CAS-11 DIMM - Intel v1 - G8

compatible

721101-001Compatible

HP 16Gb PC3-12800R 1600Mhz ECC REG DR x4 CAS-11 DIMM - Intel v1 - G8

compatible

LIFECYCLE

StatusACTIVE

AvailabilityOEM and secondary market

RoHS CompliantEAR99ESD SensitiveNot HAZMAT

THIS PART SUBSTITUTES FOR 6

A2Z52AASUBSTITUTE

HP 16Gb PC3-12800R 1600Mhz ECC REG DR x4 CAS-11 DIMM - Intel v1 - G8

HPE

672309-581SUBSTITUTE

HP 16Gb PC3-12800R 1600Mhz ECC REG DR x4 CAS-11 DIMM - Intel v1 - G8

HPE

672612-081SUBSTITUTE

HP 16Gb PC3-12800R 1600Mhz ECC REG DR x4 CAS-11 DIMM - Intel v1 - G8

HPE

682415-001SUBSTITUTE

HP 16Gb PC3-12800R 1600Mhz ECC REG DR x4 CAS-11 DIMM - Intel v1 - G8

HPE

684031-001SUBSTITUTE

HP 16Gb PC3-12800R 1600Mhz ECC REG DR x4 CAS-11 DIMM - Intel v1 - G8

HPE

721101-001SUBSTITUTE

HP 16Gb PC3-12800R 1600Mhz ECC REG DR x4 CAS-11 DIMM - Intel v1 - G8

HPE

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FREQUENTLY ASKED QUESTIONS

What is 672631-B21?

672631-B21 is a HP 16GB (1x16gb) 2Rx4 Pc3-12800r DDR3-1600MHZ RDIMM manufactured by HP. It is classified as a MEMORY (RDIMM).

What parts can replace 672631-B21?

There are 3 known substitutes for 672631-B21: 684031-001, 672612-081, 721101-001. Substitute compatibility should be verified for your specific system.

What is the NSN for 672631-B21?

672631-B21 is cataloged in the Federal Logistics Information System (FLIS) under NSN 7025-01-618-6200. This indicates validated use in U.S. government and defense supply chains.

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