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PartsTable / MEMORY / 664690-001
664690-001 ✓ 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 DIMM 8-GB, PC3L-10600R-9, dual-rank x4. 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→ 664690-001
SPECIFICATIONS
Part Number664690-001
ManufacturerHP
COMPONENT DIAGRAM
ECC — 2Rx4 PC4 — RDIMM HP NOTCH ~133.35 mm DDR4 RDIMM | — | — | PC4 Notch position = DDR4 generation | DDR3/DDR4/DDR5 physically incompatible RDIMM = Registered (servers) | LRDIMM = Load-Reduced | UDIMM = Unbuffered TITLE DDR4 RDIMM PN 664690-001 MFR HP — —
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 2
647897-B21Compatible
HP 8Gb PC3L-10600R 1333Mhz ECC REG DR x4 CAS-9 LV DIMM - Intel v1 - G8
compatible
647650-071Compatible
HP 8Gb PC3L-10600R 1333Mhz ECC REG DR x4 CAS-9 LV DIMM - Intel v1 - G8
compatible
LIFECYCLE
StatusUNKNOWN
Availability—
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
THIS PART SUBSTITUTES FOR 2
647650-071SUBSTITUTE
HP 8Gb PC3L-10600R 1333Mhz ECC REG DR x4 CAS-9 LV DIMM - Intel v1 - G8
HPE
647897-B21SUBSTITUTE
HP 8Gb PC3L-10600R 1333Mhz ECC REG DR x4 CAS-9 LV DIMM - Intel v1 - G8
HPE
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FREQUENTLY ASKED QUESTIONS
What is 664690-001?
664690-001 is a HP DIMM 8-GB, PC3L-10600R-9, dual-rank x4 manufactured by HP. It is classified as a MEMORY (RDIMM).
What parts can replace 664690-001?
There are 2 known substitutes for 664690-001: 647897-B21, 647650-071. Substitute compatibility should be verified for your specific system.
Is 664690-001 still available?
664690-001 is currently Unknown.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026