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Technical Data Sheet
4JMGM ✓ Verified by PartsTable
DELL · MEMORY · LRDIMM
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
DELL 64GB (1x64GB) 4RX4 PC4-21300V-L DDR4-2666MHZ LRDIMM

Random Access Memory (RAM) is a type of hardware that your computer uses to store information. Adding memory is one of the most cost-effective ways to improve your computer's performance. Key specifications include Component for: PC/Server, Internal memory: 64 GB, Memory clock speed: 2666 MHz, Memory form factor: 288-pin DIMM, Internal memory type: DDR4, Harmonized System (HS) code: 84733020.

Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
MEMORY LRDIMM 4JMGM
SPECIFICATIONS
Component forPC/Server
Internal memory64 GB
Memory clock speed2666 MHz
Memory form factor288-pin DIMM
Internal memory typeDDR4
Harmonized System (HS) code84733020
Memory layout (modules x size)1 x 64 GB
COMPONENT DIAGRAM
ECC 64GB 2Rx4 PC4 2666MHz LRDIMM DELL NOTCH ~133.35 mm DDR4 LRDIMM | 64GB | 2666MHz | PC4 Notch position = DDR4 generation | DDR3/DDR4/DDR5 physically incompatible RDIMM = Registered (servers) | LRDIMM = Load-Reduced | UDIMM = Unbuffered TITLE DDR4 LRDIMM PN 4JMGM MFR DELL 64GB 2666MHz
KEY FEATURES
Up to 64 GB
DDR4 Interface
64GB Capacity
2666MHz Speed
DDR4 LRDIMM
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 4
SNP4JMGMC/64GCompatible
Dell 64Gb PC4-2666V-L Load Reduced QR x4 CAS-19 DIMM - MPN
compatible
370-ADNHCompatible
Dell 64Gb PC4-2666V-L Load Reduced QR x4 CAS-19 DIMM - SPN
compatible
370-AETBCompatible
Dell 64Gb PC4-2666V-L Load Reduced QR x4 CAS-19 DIMM - SPN
compatible
A9781930Compatible
Dell 64Gb PC4-2666V-L Load Reduced QR x4 CAS-19 DIMM - DPN
compatible
LIFECYCLE
StatusUNKNOWN
Availability
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
THIS PART SUBSTITUTES FOR 4
A9781930SUBSTITUTE
Dell 64Gb PC4-2666V-L Load Reduced QR x4 CAS-19 DIMM - APN
DELL
SNP4JMGMC/64GSUBSTITUTE
Dell 64Gb PC4-2666V-L Load Reduced QR x4 CAS-19 DIMM - APN
DELL
370-ADNHSUBSTITUTE
Dell 64Gb PC4-2666V-L Load Reduced QR x4 CAS-19 DIMM - APN
DELL
370-AETBSUBSTITUTE
Dell 64Gb PC4-2666V-L Load Reduced QR x4 CAS-19 DIMM - APN
DELL
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FREQUENTLY ASKED QUESTIONS
What is 4JMGM?
4JMGM is a Dell 64GB (1x64gb) 4Rx4 Pc4-21300V-L DDR4-2666MHZ LRDIMM manufactured by DELL. It is classified as a MEMORY (LRDIMM).
What parts can replace 4JMGM?
There are 4 known substitutes for 4JMGM: SNP4JMGMC/64G, 370-ADNH, 370-AETB and 1 more. Substitute compatibility should be verified for your specific system.
Is 4JMGM still available?
4JMGM is currently Unknown.
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