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4X77A12186 — Lenovo ThinkSystem 64GB TruDDR4 2933MHz (2Rx4 1.2V) RDIMM

LENOVO · MEMORY · RDIMM
PRODUCT OVERVIEW

4X77A12186: Lenovo ThinkSystem 64GB TruDDR4 2933MHz (2Rx4 1.2V) RDIMM.

Memory reliability, performance and quality are even more critical today as customers utilize greater memory capacities for Big Data Analytics, Cloud Computing, Virtualization, Database and High Performance Computing workloads. Lenovo offers TruDDR5 and TruDDR4 Memory portfolio for ThinkSystem servers which help dramatically improve workload performance. 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→ 4X77A12186
SPECIFICATIONS
ECCNo
Component forServer
Memory voltage1.2 V
Internal memory64 GB
Memory clock speed2933 MHz
Memory form factor288-pin DIMM
Buffered memory typeRegistered (buffered)
Internal memory typeDDR4
MORE FROM LENOVO
Popular Lenovo machine pages — browsing only, not a fit claim for 4X77A12186.
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COMPONENT DIAGRAM
ECC 64GB 2Rx4 PC4 2933MHz RDIMM LENOV NOTCH ~133.35 mm DDR4 RDIMM | 64GB | 2933MHz | PC4 Notch position = DDR4 generation | DDR3/DDR4/DDR5 physically incompatible RDIMM = Registered (servers) | LRDIMM = Load-Reduced | UDIMM = Unbuffered TITLE DDR4 RDIMM PN 4X77A12186 MFR LENOVO 64GB 2933MHz
KEY FEATURES
•
Up to 64 GB
•
DDR4 Interface
•
64GB Capacity
•
2933MHz 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
SUBSTITUTES & CROSS-REFERENCES 2
02JG169SubstituteBROKER-VERIFIED
Lenovo ThinkSystem 64GB TruDDR4 2933MHz (2Rx4 1.2V) RDIMM
substitute
SM37A21317CompatiblePARTNER
IBM 64Gb PC4-2933Y-R ECC REG DR x4 Performance+ DIMM for ThinkSystem - P/N
compatible
LIFECYCLE

No lifecycle data available.

THIS PART SUBSTITUTES FOR 2
SM37A21317SUBSTITUTE
IBM 64Gb PC4-2933Y-R ECC REG DR x4 Performance+ DIMM for ThinkSystem - Option
LENOVO
02JG169SUBSTITUTE
IBM 64Gb PC4-2933Y-R ECC REG DR x4 Performance+ DIMM for ThinkSystem - Option
LENOVO
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FREQUENTLY ASKED QUESTIONS
What is 4X77A12186?
4X77A12186 is a Lenovo ThinkSystem 64GB TruDDR4 2933MHz (2Rx4 1.2V) RDIMM manufactured by LENOVO. It is classified as a MEMORY (RDIMM).
What parts can replace 4X77A12186?
There are 2 known substitutes for 4X77A12186: 02JG169, SM37A21317. Substitute compatibility should be verified for your specific system.
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PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.