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4X77A12187 — IBM 128Gb PC4-2933Y-R ECC REG 4R x4 Performance+ 3DS DIMM for ThinkSystem - FRU

LENOVO · DIMM
PRODUCT OVERVIEW

4X77A12187: IBM 128Gb PC4-2933Y-R ECC REG 4R x4 Performance+ 3DS DIMM for ThinkSystem - FRU.

IBM 128Gb PC4-2933Y-R ECC REG 4R x4 Performance+ 3DS DIMM for ThinkSystem - FRU. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

SPECIFICATIONS
Part Number4X77A12187
ManufacturerLENOVO
Capacity128GB
Speed2933MHz
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COMPONENT DIAGRAM
ECC 128GB 2Rx4 PC4 2933MHz RDIMM LENOV NOTCH ~133.35 mm DDR4 RDIMM | 128GB | 2933MHz | PC4 Notch position = DDR4 generation | DDR3/DDR4/DDR5 physically incompatible RDIMM = Registered (servers) | LRDIMM = Load-Reduced | UDIMM = Unbuffered TITLE DDR4 RDIMM PN 4X77A12187 MFR LENOVO 128GB 2933MHz
KEY FEATURES
•
128GB 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
02JG170CompatiblePARTNER
IBM 128Gb PC4-2933Y-R ECC REG 4R x4 Performance+ 3DS DIMM for ThinkSystem - FRU
compatible
SM37A21318CompatiblePARTNER
IBM 128Gb PC4-2933Y-R ECC REG 4R x4 Performance+ 3DS DIMM for ThinkSystem - P/N
compatible
LIFECYCLE

No lifecycle data available.

THIS PART SUBSTITUTES FOR 2
SM37A21318SUBSTITUTE
IBM 128Gb PC4-2933Y-R ECC REG 4R x4 Performance+ 3DS DIMM for ThinkSystem - Option
LENOVO
02JG170SUBSTITUTE
IBM 128Gb PC4-2933Y-R ECC REG 4R x4 Performance+ 3DS DIMM for ThinkSystem - Option
LENOVO
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FREQUENTLY ASKED QUESTIONS
What is 4X77A12187?
4X77A12187 is a IBM 128Gb PC4-2933Y-R ECC REG 4R x4 Performance+ 3DS DIMM for ThinkSystem - FRU manufactured by LENOVO.
What parts can replace 4X77A12187?
There are 2 known substitutes for 4X77A12187: 02JG170, SM37A21318. 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.