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AA664973 ✓ Verified by PartsTable
DELL · 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

The AA664973 is a DELL industrial component. 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→ AA664973
SPECIFICATIONS
Part NumberAA664973
ManufacturerDELL
COMPONENT DIAGRAM
ECC — 2Rx4 PC4 — RDIMM DELL 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 AA664973 MFR DELL — —
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
SNPHVY68C/128GCompatible
Dell 128Gb PC4-2666 Intel Optane DC Persistent PMM - MPN
compatible
HVY68Compatible
Dell 128Gb PC4-2666 Intel Optane DC Persistent PMM - APN
compatible
LIFECYCLE
StatusUNKNOWN
Availability—
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
THIS PART SUBSTITUTES FOR 2
HVY68SUBSTITUTE
Dell 128Gb PC4-2666 Intel Optane DC Persistent PMM - DPN
DELL
SNPHVY68C/128GSUBSTITUTE
Dell 128Gb PC4-2666 Intel Optane DC Persistent PMM - DPN
DELL
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FREQUENTLY ASKED QUESTIONS
What is AA664973?
AA664973 is a AA664973 manufactured by DELL. It is classified as a MEMORY (RDIMM).
What parts can replace AA664973?
There are 2 known substitutes for AA664973: SNPHVY68C/128G, HVY68. Substitute compatibility should be verified for your specific system.
Is AA664973 still available?
AA664973 is currently Unknown.
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Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
Last verified: July 2026