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A9781929 ✓ Verified by PartsTable
EMC · 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
DELL 32GB (1 x 32GB) 2RX4 PC4-21300V-R DDR4-2666MHZ RDIMM

DELL 32GB (1 x 32GB) 2RX4 PC4-21300V-R DDR4-2666MHZ RDIMM. Key specifications include ECC: Yes, Component for: PC/Server, Memory voltage: 1.2 V, Internal memory: 32 GB, Chips organisation: 2Rx4, Memory clock speed: 2666 MHz. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 7025-01-691-6564, indicating validated use in U.S. government and defense logistics supply chains. 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 A9781929
NSN: 7025-01-691-6564
FSC: 7025
CAGE: 3XAU1 — DELL FEDERAL SYSTEMS L.P (USA)
SPECIFICATIONS
ECCYes
Component forPC/Server
Memory ranking2
Memory voltage1.2 V
Internal memory32 GB
Chips organisation2Rx4
Memory clock speed2666 MHz
Memory form factor288-pin DIMM
Buffered memory typeRegistered (buffered)
Internal memory typeDDR4
Harmonized System (HS) code84733020
NSN7025-01-691-6564
COMPONENT DIAGRAM
ECC 2Rx4 PC4 RDIMM EMC NOTCH ~133.35 mm DDR4 RDIMM | — | — | PC4 Notch position = DDR4 generation | DDR3/DDR4/DDR5 physically incompatible RDIMM = Registered (servers) | LRDIMM = Load-Reduced | UDIMM = Unbuffered TITLE DDR4 RDIMM PN A9781929 MFR EMC — —
KEY FEATURES
Up to 32 GB
TECHNICAL CHARACTERISTICS (FLIS)
END ITEM IDENTIFICATION5895 - 016804842
SPECIAL FEATURES32.0GB, 2RX4 DDR4 RDIMM, 2666MHZ GB
PART NAME ASSIGNED BY CONTROLLING AGENCYMEMORY,MICROCIRCUIT
END ITEM IDENTIFICATION5895 - 016804842
SPECIAL FEATURES32.0GB, 2RX4 DDR4 RDIMM, 2666MHZ GB
PART NAME ASSIGNED BY CONTROLLING AGENCYMEMORY,MICROCIRCUIT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
TN78YCompatible
Dell 32GB PC4-2666V-R ECC Reg Dr X4 Cas-19 Dimm - Apn
compatible
370-ADNFCompatible
Dell 32GB PC4-2666V-R ECC Reg Dr X4 Cas-19 Dimm - Spn
compatible
370-ADOTCompatible
Dell 32GB PC4-2666V-R ECC Reg Dr X4 Cas-19 Dimm - Spn
compatible
SNPTN78YC/32GCompatible
Dell 32GB PC4-2666V-R ECC Reg Dr X4 Cas-19 Dimm - Mpn
compatible
SNPTN78YC/32VXRCompatible
Dell 32GB PC4-2666V-R ECC Reg Dr X4 Cas-19 Dimm - Mpn
compatible
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
THIS PART SUBSTITUTES FOR 5
SNPTN78YC/32GSUBSTITUTE
Dell 32Gb PC4-2666V-R ECC REG DR x4 CAS-19 DIMM - DPN
DELL
SNPTN78YC/32VXRSUBSTITUTE
Dell 32Gb PC4-2666V-R ECC REG DR x4 CAS-19 DIMM - DPN
DELL
TN78YSUBSTITUTE
Dell 32Gb PC4-2666V-R ECC REG DR x4 CAS-19 DIMM - DPN
DELL
370-ADNFSUBSTITUTE
Dell 32Gb PC4-2666V-R ECC REG DR x4 CAS-19 DIMM - DPN
DELL
370-ADOTSUBSTITUTE
Dell 32Gb PC4-2666V-R ECC REG DR x4 CAS-19 DIMM - DPN
DELL
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FREQUENTLY ASKED QUESTIONS
What is A9781929?
A9781929 is a A9781929 manufactured by EMC. It is classified as a MEMORY (RDIMM).
What parts can replace A9781929?
There are 5 known substitutes for A9781929: TN78Y, 370-ADNF, 370-ADOT and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A9781929?
A9781929 is cataloged in the Federal Logistics Information System (FLIS) under NSN 7025-01-691-6564. This indicates validated use in U.S. government and defense supply chains.
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