PartsTable
Technical Data Sheet
647901-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) Dual Rank x4 PC3L-10600R (DDR3-1333). This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5962-01-626-4454, 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 647901-B21
NSN: 5962-01-626-4454
FSC: 5962
CAGE: 007XU — STEMO OOD (BGR)
SPECIFICATIONS
Part Number647901-B21
ManufacturerHP
InterfaceDDR3
Capacity16GB
NSN5962-01-626-4454
COMPONENT DIAGRAM
ECC 16GB 2Rx4 PC3 RDIMM HP NOTCH ~133.35 mm DDR3 RDIMM | 16GB | — | PC3 Notch position = DDR3 generation | DDR3/DDR4/DDR5 physically incompatible RDIMM = Registered (servers) | LRDIMM = Load-Reduced | UDIMM = Unbuffered TITLE DDR3 RDIMM PN 647901-B21 MFR HP 16GB —
KEY FEATURES
DDR3 Interface
16GB Capacity
DDR3 Memory
MEMORY DEVICE TYPE: PROGRAMMABLE
BODY WIDTH: 3.500 INCHES NOMINAL IN
BODY LENGTH: 8.500 INCHES NOMINAL IN
MEMORY CAPACITY: 16 MB MB
BODY HEIGHT: 0.750 INCHES NOMINAL IN
TERMINAL TYPE AND QUANTITY: 240 PIN
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 (FLIS)
MEMORY DEVICE TYPEPROGRAMMABLE
BODY WIDTH3.500 INCHES NOMINAL IN
BODY LENGTH8.500 INCHES NOMINAL IN
SPECIAL FEATURESDDR3-1333/PC3-10600R
MEMORY CAPACITY16 MB MB
BODY HEIGHT0.750 INCHES NOMINAL IN
TERMINAL TYPE AND QUANTITY240 PIN
PART NAME ASSIGNED BY CONTROLLING AGENCYREGISTERED CAS-9 LOW VOLTAGE MEMORY KIT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
664692-001Compatible
HP 16Gb PC3L-10600R 1333Mhz ECC REG DR x4 CAS-9 LV DIMM - Intel v1 - G8
compatible
647653-081Compatible
HP 16Gb PC3L-10600R 1333Mhz ECC REG DR x4 CAS-9 LV DIMM - Intel v1 - G8
compatible
647653-08HCompatible
HP 16Gb PC3L-10600R 1333Mhz ECC REG DR x4 CAS-9 LV DIMM - Intel v1 - G8
compatible
696682-B21Compatible
HP 16Gb PC3L-10600R 1333Mhz ECC REG DR x4 CAS-9 LV DIMM - Intel G8
compatible
698890-001Compatible
HP 16Gb PC3L-10600R 1333Mhz ECC REG DR x4 CAS-9 LV DIMM - Intel v1 - G8
compatible
743134-001Compatible
HP 16Gb PC3L-10600R 1333Mhz ECC REG DR x4 CAS-9 LV DIMM - Intel v1 - G8
compatible
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
THIS PART SUBSTITUTES FOR 6
647653-081SUBSTITUTE
HP 16Gb PC3L-10600R 1333Mhz ECC REG DR x4 CAS-9 LV DIMM - Intel v1 - G8
HPE
647653-08HSUBSTITUTE
HP 16Gb PC3L-10600R 1333Mhz ECC REG DR x4 CAS-9 LV DIMM - Intel v1 - G8
HPE
664692-001SUBSTITUTE
HP 16Gb PC3L-10600R 1333Mhz ECC REG DR x4 CAS-9 LV DIMM - Intel v1 - G8
HPE
696682-B21SUBSTITUTE
HP 16Gb PC3L-10600R 1333Mhz ECC REG DR x4 CAS-9 LV DIMM - Intel v1 - G8
HPE
698890-001SUBSTITUTE
HP 16Gb PC3L-10600R 1333Mhz ECC REG DR x4 CAS-9 LV DIMM - Intel v1 - G8
HPE
743134-001SUBSTITUTE
HP 16Gb PC3L-10600R 1333Mhz ECC REG DR x4 CAS-9 LV DIMM - Intel v1 - G8
HPE
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FREQUENTLY ASKED QUESTIONS
What is 647901-B21?
647901-B21 is a HP 16GB (1x16GB) Dual Rank x4 PC3L-10600R (DDR3-1333) manufactured by HP. It is classified as a MEMORY (RDIMM).
What parts can replace 647901-B21?
There are 6 known substitutes for 647901-B21: 664692-001, 647653-081, 647653-08H and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 647901-B21?
647901-B21 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5962-01-626-4454. This indicates validated use in U.S. government and defense supply chains.
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