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R0X03A — 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 256Gb PC4-2666 Intel Optane Persistent Memory 100 Series - G10. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
R0X03A
SPECIFICATIONS
Part NumberR0X03A
ManufacturerHPE
Capacity256GB
Speed2666MHz
COMPONENT DIAGRAM
ECC 256GB 2Rx4 PC4 2666MHz RDIMM HPE NOTCH ~133.35 mm DDR4 RDIMM | 256GB | 2666MHz | PC4 Notch position = DDR4 generation | DDR3/DDR4/DDR5 physically incompatible RDIMM = Registered (servers) | LRDIMM = Load-Reduced | UDIMM = Unbuffered TITLE DDR4 RDIMM PN R0X03A MFR HPE 256GB 2666MHz
KEY FEATURES
•
256GB 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 3
835807-B21Compatible
HP 256Gb PC4-2666 Intel Optane Persistent Memory 100 Series - G10
compatible
844072-001Compatible
HP 256Gb PC4-2666 Intel Optane Persistent Memory 100 Series - G10
compatible
P12110-001Compatible
HP 256Gb PC4-2666 Intel Optane Persistent Memory 100 Series - G10
compatible
LIFECYCLE
StatusUNKNOWN
Availability—
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
THIS PART SUBSTITUTES FOR 3
P12110-001SUBSTITUTE
HP 256Gb PC4-2666 Intel Optane Persistent Memory 100 Series - Intel - G10 for Superdome Flex
HPE
835807-B21SUBSTITUTE
HP 256Gb PC4-2666 Intel Optane Persistent Memory 100 Series - Intel - G10 for Superdome Flex
HPE
844072-001SUBSTITUTE
HP 256Gb PC4-2666 Intel Optane Persistent Memory 100 Series - Intel - G10 for Superdome Flex
HPE
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FREQUENTLY ASKED QUESTIONS
What is R0X03A?
R0X03A is a HP 256Gb PC4-2666 Intel Optane Persistent Memory 100 Series - G10 manufactured by HPE.
What parts can replace R0X03A?
There are 3 known substitutes for R0X03A: 835807-B21, 844072-001, P12110-001. Substitute compatibility should be verified for your specific system.
Is R0X03A still available?
R0X03A is currently Unknown.
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PartsTable Design LLC · partstable.com
Last verified: September 2026