PartsTable
Technical Data Sheet
PartsTable / MEMORY / 840755-091
840755-091 ✓ Verified by PartsTable
HPE · 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
DIMM,8GB PC4-2666V-R,1Gx8

The Dimm,8gb Pc4-2666V-R,1gx8 is a HPE memory module engineered for enterprise server and workstation platforms requiring validated, high-reliability memory. 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→ 840755-091
SPECIFICATIONS
Part Number840755-091
ManufacturerHPE
Capacity8GB
Speed2666MHz
COMPONENT DIAGRAM
ECC 8GB 2Rx4 PC4 2666MHz RDIMM HPE NOTCH ~133.35 mm DDR4 RDIMM | 8GB | 2666MHz | PC4 Notch position = DDR4 generation | DDR3/DDR4/DDR5 physically incompatible RDIMM = Registered (servers) | LRDIMM = Load-Reduced | UDIMM = Unbuffered TITLE DDR4 RDIMM PN 840755-091 MFR HPE 8GB 2666MHz
KEY FEATURES
•
8GB Capacity
•
2666MHz Speed
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
815097-B21Compatible
HP 8Gb PC4-2666V-R ECC REG SR x8 CAS-19 DIMM - Intel - G10
compatible
850879-001Compatible
HP 8Gb PC4-2666V-R ECC REG SR x8 CAS-19 DIMM - Intel - G10
compatible
1XD84AACompatible
HP 8GB PC4-2666V-R ECC Reg Sr X8 Cas-19 Dimm - Intel - WS
compatible
1XD84ATCompatible
HP 8GB PC4-2666V-R ECC Reg Sr X8 Cas-19 Dimm - Intel - WS
compatible
815097-H21Compatible
HP 8Gb PC4-2666V-R ECC REG SR x8 CAS-19 DIMM - Intel - G10
compatible
815097-K21Compatible
HP 8Gb PC4-2666V-R ECC REG SR x8 CAS-19 DIMM - Intel - G10
compatible
LIFECYCLE
StatusUNKNOWN
Availability—
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
THIS PART SUBSTITUTES FOR 16
L09274-001SUBSTITUTE
HP 8Gb PC4-2666V-R ECC REG SR x8 CAS-19 DIMM - Intel - G10
HPE
L09284-850SUBSTITUTE
HP 8Gb PC4-2666V-R ECC REG SR x8 CAS-19 DIMM - Intel - G10
HPE
L12127-001SUBSTITUTE
HP 8Gb PC4-2666V-R ECC REG SR x8 CAS-19 DIMM - Intel - G10
HPE
L42289-001SUBSTITUTE
HP 8Gb PC4-2666V-R ECC REG SR x8 CAS-19 DIMM - Intel - G10
HPE
1XD84AASUBSTITUTE
HP 8Gb PC4-2666V-R ECC REG SR x8 CAS-19 DIMM - Intel - G10
HPE
1XD84ATSUBSTITUTE
HP 8Gb PC4-2666V-R ECC REG SR x8 CAS-19 DIMM - Intel - G10
HPE
815097-B21SUBSTITUTE
HP 8Gb PC4-2666V-R ECC REG SR x8 CAS-19 DIMM - Intel - G10
HPE
815097-H21SUBSTITUTE
HP 8Gb PC4-2666V-R ECC REG SR x8 CAS-19 DIMM - Intel - G10
HPE
815097-K21SUBSTITUTE
HP 8Gb PC4-2666V-R ECC REG SR x8 CAS-19 DIMM - Intel - G10
HPE
815097-X21SUBSTITUTE
HP 8Gb PC4-2666V-R ECC REG SR x8 CAS-19 DIMM - Intel - G10
HPE
840755-09SSUBSTITUTE
HP 8Gb PC4-2666V-R ECC REG SR x8 CAS-19 DIMM - Intel - G10
HPE
850879-001SUBSTITUTE
HP 8Gb PC4-2666V-R ECC REG SR x8 CAS-19 DIMM - Intel - G10
HPE
864706-591SUBSTITUTE
HP 8Gb PC4-2666V-R ECC REG SR x8 CAS-19 DIMM - Intel - G10
HPE
867853-B21SUBSTITUTE
HP 8Gb PC4-2666V-R ECC REG SR x8 CAS-19 DIMM - Intel - G10
HPE
872836-091SUBSTITUTE
HP 8Gb PC4-2666V-R ECC REG SR x8 CAS-19 DIMM - Intel - G10
HPE
872969-001SUBSTITUTE
HP 8Gb PC4-2666V-R ECC REG SR x8 CAS-19 DIMM - Intel - G10
HPE
Ready to buy 840755-091?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 840755-091?
840755-091 is a Dimm,8gb Pc4-2666V-R,1gx8 manufactured by HPE. It is classified as a MEMORY (RDIMM).
What parts can replace 840755-091?
There are 12 known substitutes for 840755-091: 815097-B21, 850879-001, 1XD84AA and 9 more. Substitute compatibility should be verified for your specific system.
Is 840755-091 still available?
840755-091 is currently Unknown.
Community Feedback
Comments (0)
Loading comments...
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Need a quote for 840755-091?

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026