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PartsTable / MEMORY / 466440-B21
466440-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 8 GB FBD PC2-5300 (2 x 4 GB LP) Kit

HP 8 GB FBD PC2-5300 (2 x 4 GB LP) Kit. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5962-01-593-4519, 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→ 466440-B21
NSN: 5962-01-593-4519
FSC: 5962
CAGE: 28480 — HEWLETT-PACKARD COMPANY DBA HP (USA)
SPECIFICATIONS
Part Number466440-B21
ManufacturerHP
Capacity8GB
NSN5962-01-593-4519
COMPONENT DIAGRAM
ECC 8GB 2Rx4 PC4 — RDIMM HP NOTCH ~133.35 mm DDR4 RDIMM | 8GB | — | PC4 Notch position = DDR4 generation | DDR3/DDR4/DDR5 physically incompatible RDIMM = Registered (servers) | LRDIMM = Load-Reduced | UDIMM = Unbuffered TITLE DDR4 RDIMM PN 466440-B21 MFR HP 8GB —
KEY FEATURES
•
8GB Capacity
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 4
467654-001Compatible
HP 4Gb PC2-5300F 667Mhz ECC FBD DR x4 CL5 LP 240-Pin (256Mx4) DIMM - Intel
compatible
466436-061Compatible
HP 4Gb PC2-5300F 667Mhz ECC FBD DR x4 CL5 LP 240-Pin (256Mx4) DIMM - Intel
compatible
493006-001Compatible
HP 4Gb PC2-5300F 667Mhz ECC FBD DR x4 CL5 LP 240-Pin (256Mx4) DIMM - Intel
compatible
531763-001Compatible
HP 4Gb PC2-5300F 667Mhz ECC FBD DR x4 CL5 LP 240-Pin (256Mx4) DIMM - Intel
compatible
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
THIS PART SUBSTITUTES FOR 6
466436-061SUBSTITUTE
HP 8Gb PC2-5300F 667Mhz ECC FBD DR x4 CL5 LP 240-Pin (2x4Gb) Memory Kit - Intel
HPE
467654-001SUBSTITUTE
HP 8Gb PC2-5300F 667Mhz ECC FBD DR x4 CL5 LP 240-Pin (2x4Gb) Memory Kit - Intel
HPE
468464-B21SUBSTITUTE
HP 8Gb PC2-5300F 667Mhz ECC FBD DR x4 CL5 LP 240-Pin (2x4Gb) Memory Kit - Intel
HPE
493006-001SUBSTITUTE
HP 8Gb PC2-5300F 667Mhz ECC FBD DR x4 CL5 LP 240-Pin (2x4Gb) Memory Kit - Intel
HPE
506735-B21SUBSTITUTE
HP 8Gb PC2-5300F 667Mhz ECC FBD DR x4 CL5 LP 240-Pin (2x4Gb) Memory Kit - Intel
HPE
531763-001SUBSTITUTE
HP 8Gb PC2-5300F 667Mhz ECC FBD DR x4 CL5 LP 240-Pin (2x4Gb) Memory Kit - Intel
HPE
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FREQUENTLY ASKED QUESTIONS
What is 466440-B21?
466440-B21 is a HP 8 GB Fbd Pc2-5300 (2 X 4 GB Lp) Kit manufactured by HP. It is classified as a MEMORY (RDIMM).
What parts can replace 466440-B21?
There are 4 known substitutes for 466440-B21: 467654-001, 466436-061, 493006-001 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 466440-B21?
466440-B21 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5962-01-593-4519. This indicates validated use in U.S. government and defense supply chains.
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Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
Last verified: July 2026