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Technical Data Sheet

UCSMRX64G4RSH — Memory Specs & Substitutes

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CISCO · 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: Double-check what you're quoting in volatile market.
HOT market — DDR5/DDR4 extremely volatile
PRODUCT OVERVIEW

Cisco 64GB DDR4-2666-MHz TSV-RDIMM/PC4-21300/quad rank/1.2v. Key specifications include Rank: Quad Rank (4R), Speed: DDR4-2666, Voltage: 1.2V, Capacity: 64GB, Form Factor: RDIMM. This product has reached end-of-marketing and is available through the secondary market and authorized resellers.

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→ UCSMRX64G4RSH
SPECIFICATIONS
RankQuad Rank (4R)
SpeedDDR4-2666
Voltage1.2V
Capacity64GB
Form FactorRDIMM
COMPONENT DIAGRAM
ECC 64GB 2Rx4 PC4 2130MHz RDIMM CISCO NOTCH ~133.35 mm DDR4 RDIMM | 64GB | 2130MHz | PC4 Notch position = DDR4 generation | DDR3/DDR4/DDR5 physically incompatible RDIMM = Registered (servers) | LRDIMM = Load-Reduced | UDIMM = Unbuffered TITLE DDR4 RDIMM PN UCSMRX64G4RSH MFR CISCO 64GB 2130MHz
KEY FEATURES
•
DDR4 Interface
•
64GB Capacity
•
2130MHz Speed
•
DDR4 RDIMM
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 1
1510508301SubstituteBROKER-VERIFIED
Cisco 64GB DDR4-2666-MHz TSV-RDIMM/PC4-21300/quad rank/1.2v
substitute
LIFECYCLE
StatusEOS
End of Sale2022-01-09
End of Support2021-10-10
Availability—
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is UCSMRX64G4RSH?
UCSMRX64G4RSH is a Cisco 64GB DDR4-2666-MHz TSV-RDIMM/PC4-21300/quad rank/1.2v manufactured by CISCO. It is classified as a MEMORY (RDIMM).
What parts can replace UCSMRX64G4RSH?
There is 1 known substitute for UCSMRX64G4RSH: 1510508301. Substitute compatibility should be verified for your specific system.
Is UCSMRX64G4RSH still available?
UCSMRX64G4RSH is currently eos. End of Support: 2021-10-10.
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