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815100-B21 — HP 32GB (1x32gb) 2Rx4 Pc4-21300V-R DDR4-2666MHZ RDIMM

✓ Government record, cited
HP · MEMORY · RDIMM
PRODUCT OVERVIEW
HP 32GB (1x32GB) 2RX4 PC4-21300V-R DDR4-2666MHZ RDIMM

815100-B21: HP 32GB (1x32gb) 2Rx4 Pc4-21300V-R DDR4-2666MHZ RDIMM.

A Hewlett Packard Enterprise equivalent 32 GB Dual rank- registered ECC DDR4 SDRAM - DIMM 288-pin 2666 MHz (PC4-21300) from Hypertec NOTE: This memory meets the memory specification requirements for reliable operation within a HP Generation 8 (or 9) server- but is not SmartMemory and does not identify as SmartMemory when installed or deliver SmartMemory specific features. from Hypertec This part is cataloged in the U.S. Government catalog under NSN 5998-01-671-8231, indicating validated use in U.S.

government and defense logistics supply chains.

WHERE IT FITS
MEMORY→ RDIMM→ 815100-B21
NSN: 5998-01-671-8231
FSC: 5998 — Electrical and Electronic Assemblies, Boards, Cards, and Associated Hardware
CAGE: 28480 — HEWLETT-PACKARD COMPANY DBA HP (USA)
SPECIFICATIONS
SpeedDDR4-2666
Voltage1.2V
Capacity32GB
Form FactorRDIMM
NSN5998-01-671-8231
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COMPONENT DIAGRAM
ECC 32GB 2Rx4 PC4 2666MHz RDIMM HP NOTCH ~133.35 mm DDR4 RDIMM | 32GB | 2666MHz | PC4 Notch position = DDR4 generation | DDR3/DDR4/DDR5 physically incompatible RDIMM = Registered (servers) | LRDIMM = Load-Reduced | UDIMM = Unbuffered TITLE DDR4 RDIMM PN 815100-B21 MFR HP 32GB 2666MHz
KEY FEATURES
•
DDR4 Interface
•
32GB Capacity
•
2666MHz Speed
•
DDR4 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
TECHNICAL CHARACTERISTICS
PART NAME ASSIGNED BY CONTROLLING AGENCYHPE 32 GB (1X32GB) DUAL RANK X4 DDR4-2666 CAS-19-19-19 REGISTERED SMART MEMORY KIT GB
OTHER ITEMS IN FSC 5998 — Electrical and Electronic Assemblies, Boards, Cards, and Associated Hardware
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5998-00-000-0087 5998-00-000-0089 5998-00-000-0154 5998-00-000-0173 5998-00-000-0175 5998-00-000-0177 5998-00-001-1267 5998-00-001-1271
SUBSTITUTES & CROSS-REFERENCES 12
850881001SubstituteBROKER-VERIFIED
HP 32GB (1x32gb) 2Rx4 Pc4-21300V-R DDR4-2666MHZ RDIMM
substitute
1XD86AACompatiblePARTNER
HP 32GB PC4-2666V-R ECC Reg Dr X4 Cas-19 Dimm - Intel - WS
compatible
1XD86ATCompatiblePARTNER
HP 32GB PC4-2666V-R ECC Reg Dr X4 Cas-19 Dimm - Intel - WS
compatible
815100-H21CompatiblePARTNER
HP 32Gb PC4-2666V-R ECC REG DR x4 CAS-19 DIMM - Intel - G10
compatible
815100-K21CompatiblePARTNER
HP 32Gb PC4-2666V-R ECC REG DR x4 CAS-19 DIMM - Intel - G10
compatible
815100-X21CompatiblePARTNER
HP 32Gb PC4-2666V-R ECC REG DR x4 CAS-19 DIMM - Intel - G10
compatible
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
THIS PART SUBSTITUTES FOR 20
880841-B21SUBSTITUTE
HP 32Gb PC4-2666V-R ECC REG DR x4 CAS-19 DIMM - Intel - G10
HPE
882361-091SUBSTITUTE
HP 32Gb PC4-2666V-R ECC REG DR x4 CAS-19 DIMM - Intel - G10
HPE
882448-001SUBSTITUTE
HP 32Gb PC4-2666V-R ECC REG DR x4 CAS-19 DIMM - Intel - G10
HPE
L09276-001SUBSTITUTE
HP 32Gb PC4-2666V-R ECC REG DR x4 CAS-19 DIMM - Intel - G10
HPE
L09286-850SUBSTITUTE
HP 32Gb PC4-2666V-R ECC REG DR x4 CAS-19 DIMM - Intel - G10
HPE
L12129-001SUBSTITUTE
HP 32Gb PC4-2666V-R ECC REG DR x4 CAS-19 DIMM - Intel - G10
HPE
L42293-001SUBSTITUTE
HP 32Gb PC4-2666V-R ECC REG DR x4 CAS-19 DIMM - Intel - G10
HPE
P00602-001SUBSTITUTE
HP 32Gb PC4-2666V-R ECC REG DR x4 CAS-19 DIMM - Intel - G10
HPE
P02892-B21SUBSTITUTE
HP 32Gb PC4-2666V-R ECC REG DR x4 CAS-19 DIMM - Intel - G10
HPE
P04177-001SUBSTITUTE
HP 32Gb PC4-2666V-R ECC REG DR x4 CAS-19 DIMM - Intel - G10
HPE
P05590-B21SUBSTITUTE
HP 32Gb PC4-2666V-R ECC REG DR x4 CAS-19 DIMM - Intel - G10
HPE
P05590-X21SUBSTITUTE
HP 32Gb PC4-2666V-R ECC REG DR x4 CAS-19 DIMM - Intel - G10
HPE
P06185-001SUBSTITUTE
HP 32Gb PC4-2666V-R ECC REG DR x4 CAS-19 DIMM - Intel - G10
HPE
P13627-001SUBSTITUTE
HP 32Gb PC4-2666V-R ECC REG DR x4 CAS-19 DIMM - Intel - G10
HPE
P18445-B21SUBSTITUTE
HP 32Gb PC4-2666V-R ECC REG DR x4 CAS-19 DIMM - Intel - G10
HPE
P26140-001SUBSTITUTE
HP 32Gb PC4-2666V-R ECC REG DR x4 CAS-19 DIMM - Intel - G10
HPE
P28221-B21SUBSTITUTE
HP 32Gb PC4-2666V-R ECC REG DR x4 CAS-19 DIMM - Intel - G10
HPE
Q1V92ASUBSTITUTE
HP 32Gb PC4-2666V-R ECC REG DR x4 CAS-19 DIMM - Intel - G10
HPE
Q2D32ASUBSTITUTE
HP 32Gb PC4-2666V-R ECC REG DR x4 CAS-19 DIMM - Intel - G10
HPE
1XD86AASUBSTITUTE
HP 32Gb PC4-2666V-R ECC REG DR x4 CAS-19 DIMM - Intel - G10
HPE
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Browse links to other catalog pages — not substitutes, alternates, or equivalents of 815100-B21.

590863-B21
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20-DPW01-07
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A6752-67044
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A6913-69113
Internal link · Supply class (FSC) · Cell board assembly - With 1.1 GHz processor
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FREQUENTLY ASKED QUESTIONS
What is 815100-B21?
815100-B21 is a HP 32GB (1x32gb) 2Rx4 Pc4-21300V-R DDR4-2666MHZ RDIMM manufactured by HP. It is classified as a MEMORY (RDIMM).
What parts can replace 815100-B21?
There are 12 known substitutes for 815100-B21: 850881001, 1XD86AA, 1XD86AT and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 815100-B21?
815100-B21 is cataloged in the U.S. Government catalog under NSN 5998-01-671-8231. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.