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Q2D33A — 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 64Gb PC4-2666V-L Load Reduced QR x4 CAS-19 DIMM - Intel - G10. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
Q2D33A
SPECIFICATIONS
Part NumberQ2D33A
ManufacturerHPE
Capacity64GB
Speed2666MHz
COMPONENT DIAGRAM
ECC 64GB 2Rx4 PC4 2666MHz RDIMM HPE NOTCH ~133.35 mm DDR4 RDIMM | 64GB | 2666MHz | PC4 Notch position = DDR4 generation | DDR3/DDR4/DDR5 physically incompatible RDIMM = Registered (servers) | LRDIMM = Load-Reduced | UDIMM = Unbuffered TITLE DDR4 RDIMM PN Q2D33A MFR HPE 64GB 2666MHz
KEY FEATURES
•
64GB Capacity
•
2666MHz Speed
•
Generation 10 Platform
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 12
815101-B21Compatible
HP 64Gb PC4-2666V-L Load Reduced QR x4 CAS-19 DIMM - Intel - G10
compatible
850882-001Compatible
HP 64Gb PC4-2666V-L Load Reduced QR x4 CAS-19 DIMM - Intel - G10
compatible
815101-H21Compatible
HP 64Gb PC4-2666V-L Load Reduced QR x4 CAS-19 DIMM - Intel - G10
compatible
815101-K21Compatible
HP 64Gb PC4-2666V-L Load Reduced QR x4 CAS-19 DIMM - Intel - G10
compatible
815101-X21Compatible
HP 64Gb PC4-2666V-L Load Reduced QR x4 CAS-19 DIMM - Intel - G10
compatible
840759-091Compatible
HP 64Gb PC4-2666V-L Load Reduced QR x4 CAS-19 DIMM - Intel - G10
compatible
LIFECYCLE
StatusUNKNOWN
Availability—
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
THIS PART SUBSTITUTES FOR 18
880842-B21SUBSTITUTE
HP 64Gb PC4-2666V-L Load Reduced QR x4 CAS-19 DIMM - Intel - Apollo 35/pc40/sx40
HPE
882362-091SUBSTITUTE
HP 64Gb PC4-2666V-L Load Reduced QR x4 CAS-19 DIMM - Intel - Apollo 35/pc40/sx40
HPE
882449-001SUBSTITUTE
HP 64Gb PC4-2666V-L Load Reduced QR x4 CAS-19 DIMM - Intel - Apollo 35/pc40/sx40
HPE
HMAA8GL7AMR4N-VKSUBSTITUTE
HP 64Gb PC4-2666V-L Load Reduced QR x4 CAS-19 DIMM - Intel - Apollo 35/pc40/sx40
HPE
P00603-001SUBSTITUTE
HP 64Gb PC4-2666V-L Load Reduced QR x4 CAS-19 DIMM - Intel - Apollo 35/pc40/sx40
HPE
P04178-001SUBSTITUTE
HP 64Gb PC4-2666V-L Load Reduced QR x4 CAS-19 DIMM - Intel - Apollo 35/pc40/sx40
HPE
P18446-B21SUBSTITUTE
HP 64Gb PC4-2666V-L Load Reduced QR x4 CAS-19 DIMM - Intel - Apollo 35/pc40/sx40
HPE
P28223-B21SUBSTITUTE
HP 64Gb PC4-2666V-L Load Reduced QR x4 CAS-19 DIMM - Intel - Apollo 35/pc40/sx40
HPE
Q1V93ASUBSTITUTE
HP 64Gb PC4-2666V-L Load Reduced QR x4 CAS-19 DIMM - Intel - Apollo 35/pc40/sx40
HPE
815101-B21SUBSTITUTE
HP 64Gb PC4-2666V-L Load Reduced QR x4 CAS-19 DIMM - Intel - Apollo 35/pc40/sx40
HPE
815101-H21SUBSTITUTE
HP 64Gb PC4-2666V-L Load Reduced QR x4 CAS-19 DIMM - Intel - Apollo 35/pc40/sx40
HPE
815101-K21SUBSTITUTE
HP 64Gb PC4-2666V-L Load Reduced QR x4 CAS-19 DIMM - Intel - Apollo 35/pc40/sx40
HPE
815101-X21SUBSTITUTE
HP 64Gb PC4-2666V-L Load Reduced QR x4 CAS-19 DIMM - Intel - Apollo 35/pc40/sx40
HPE
840759-091SUBSTITUTE
HP 64Gb PC4-2666V-L Load Reduced QR x4 CAS-19 DIMM - Intel - Apollo 35/pc40/sx40
HPE
840759-091USUBSTITUTE
HP 64Gb PC4-2666V-L Load Reduced QR x4 CAS-19 DIMM - Intel - Apollo 35/pc40/sx40
HPE
840759-691SUBSTITUTE
HP 64Gb PC4-2666V-L Load Reduced QR x4 CAS-19 DIMM - Intel - Apollo 35/pc40/sx40
HPE
840759-791SUBSTITUTE
HP 64Gb PC4-2666V-L Load Reduced QR x4 CAS-19 DIMM - Intel - Apollo 35/pc40/sx40
HPE
850882-001SUBSTITUTE
HP 64Gb PC4-2666V-L Load Reduced QR x4 CAS-19 DIMM - Intel - Apollo 35/pc40/sx40
HPE
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FREQUENTLY ASKED QUESTIONS
What is Q2D33A?
Q2D33A is a HP 64Gb PC4-2666V-L Load Reduced QR x4 CAS-19 DIMM - Intel - G10 manufactured by HPE.
What parts can replace Q2D33A?
There are 12 known substitutes for Q2D33A: 815101-B21, 850882-001, 815101-H21 and 9 more. Substitute compatibility should be verified for your specific system.
Is Q2D33A still available?
Q2D33A is currently Unknown.
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Last verified: September 2026