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PartsTable / MEMORY / 01DE973
01DE973 ✓ Verified by PartsTable
IBM · 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
ThinkSystem 16GB TruDDR4 2666 MHz (2Rx8 1.2V) RDIMM

ThinkSystem 16GB TruDDR4 2666 MHz (2Rx8 1.2V) RDIMM. 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→ 01DE973
SPECIFICATIONS
Part Number01DE973
ManufacturerIBM
InterfaceDDR4
Capacity16GB
Speed2666MHz
COMPONENT DIAGRAM
ECC 16GB 2Rx4 PC4 2666MHz RDIMM IBM NOTCH ~133.35 mm DDR4 RDIMM | 16GB | 2666MHz | PC4 Notch position = DDR4 generation | DDR3/DDR4/DDR5 physically incompatible RDIMM = Registered (servers) | LRDIMM = Load-Reduced | UDIMM = Unbuffered TITLE DDR4 RDIMM PN 01DE973 MFR IBM 16GB 2666MHz
KEY FEATURES
•
DDR4 Interface
•
16GB 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 3
7X77A01303Compatible
IBM 16Gb PC4-2666V-R ECC REG DR x8 CAS-19 (1x16Gb) Memory Kit for ThinkSystem - Option
compatible
SM30L13366Compatible
IBM 16Gb PC4-2666V-R ECC REG DR x8 CAS-19 DIMM for ThinkSystem - P/N
compatible
SM30L13367Compatible
IBM 16Gb PC4-2666V-R ECC REG DR x8 CAS-19 DIMM for ThinkSystem - P/N
compatible
LIFECYCLE
StatusUNKNOWN
Availability—
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
THIS PART SUBSTITUTES FOR 3
SM30L13366SUBSTITUTE
IBM 16Gb PC4-2666V-R ECC REG DR x8 CAS-19 DIMM for ThinkSystem - FRU
LENOVO
SM30L13367SUBSTITUTE
IBM 16Gb PC4-2666V-R ECC REG DR x8 CAS-19 DIMM for ThinkSystem - FRU
LENOVO
7X77A01303SUBSTITUTE
IBM 16Gb PC4-2666V-R ECC REG DR x8 CAS-19 DIMM for ThinkSystem - FRU
LENOVO
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FREQUENTLY ASKED QUESTIONS
What is 01DE973?
01DE973 is a Lenovo ThinkSystem 16GB TruDDR4 2666 MHz (2Rx8 1.2V) RDIMM manufactured by IBM. It is classified as a MEMORY (RDIMM).
What parts can replace 01DE973?
There are 3 known substitutes for 01DE973: 7X77A01303, SM30L13366, SM30L13367. Substitute compatibility should be verified for your specific system.
Is 01DE973 still available?
01DE973 is currently Unknown.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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Last verified: July 2026