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647651-571 — Memory Specs & Substitutes

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HPE · DIMM
WHAT YOU NEED TO KNOW
2Rx4 = Dual Rank ×4 chip width (standard server) RDIMM = Registered (servers) | LRDIMM = Load-Reduced (max density)
DDR3 ≠ DDR4 ≠ DDR5 — physically incompatible (notch position)
PRODUCT OVERVIEW

HP 647651-571 memory module 8 GB DDR3 240-pin DIMM. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
647651-571
SPECIFICATIONS
Part Number647651-571
ManufacturerHPE
InterfaceDDR3
Capacity8GB
COMPONENT DIAGRAM
ECC 8GB 2Rx4 PC3 — RDIMM HPE NOTCH ~133.35 mm DDR3 RDIMM | 8GB | — | PC3 Notch position = DDR3 generation | DDR3/DDR4/DDR5 physically incompatible RDIMM = Registered (servers) | LRDIMM = Load-Reduced | UDIMM = Unbuffered TITLE DDR3 RDIMM PN 647651-571 MFR HPE 8GB —
KEY FEATURES
•
DDR3 Interface
•
8GB Capacity
•
DDR3 Memory
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 6
A2Z51AACompatible
HP 8Gb PC3-12800R 1600Mhz ECC REG DR x4 CAS-11 DIMM - Intel - WS
compatible
682414-001Compatible
HP 8Gb PC3-12800R 1600Mhz ECC REG DR x4 CAS-11 DIMM - Intel - WS
compatible
A2Z51ATCompatible
HP 8Gb PC3-12800R 1600Mhz ECC REG DR x4 CAS-11 DIMM - Intel - WS
compatible
689911-071Compatible
HP 8Gb PC3-12800R 1600Mhz ECC REG DR x4 CAS-11 DIMM - Intel v1 - G8
compatible
690802-B21Compatible
HP 8Gb PC3-12800R 1600Mhz ECC REG DR x4 CAS-11 DIMM - Intel v1 - G8
compatible
698807-001Compatible
HP 8Gb PC3-12800R 1600Mhz ECC REG DR x4 CAS-11 DIMM - Intel v1 - G8
compatible
LIFECYCLE
StatusUNKNOWN
Availability—
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
THIS PART SUBSTITUTES FOR 3
A2Z51AASUBSTITUTE
HP 8Gb PC3-12800R 1600Mhz ECC REG DR x4 CAS-11 DIMM - Intel - WS
HP
A2Z51ATSUBSTITUTE
HP 8Gb PC3-12800R 1600Mhz ECC REG DR x4 CAS-11 DIMM - Intel - WS
HP
682414-001SUBSTITUTE
HP 8Gb PC3-12800R 1600Mhz ECC REG DR x4 CAS-11 DIMM - Intel - WS
HP
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FREQUENTLY ASKED QUESTIONS
What is 647651-571?
647651-571 is a HP 647651-571 memory module 8 GB DDR3 240-pin DIMM manufactured by HPE.
What parts can replace 647651-571?
There are 6 known substitutes for 647651-571: A2Z51AA, 682414-001, A2Z51AT and 3 more. Substitute compatibility should be verified for your specific system.
Is 647651-571 still available?
647651-571 is currently Unknown.
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Last verified: September 2026