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SM37A21456 — IBM 128Gb PC4-3200AA-R ECC REG QR x4 3DS DIMM for ThinkSystem - FRU

LENOVO · DIMM
PRODUCT OVERVIEW

SM37A21456: IBM 128Gb PC4-3200AA-R ECC REG QR x4 3DS DIMM for ThinkSystem - FRU.

IBM 128Gb PC4-3200AA-R ECC REG QR x4 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 NumberSM37A21456
ManufacturerLENOVO
Capacity128GB
Speed3200MHz
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COMPONENT DIAGRAM
ECC 128GB 2Rx4 PC4 3200MHz RDIMM LENOV NOTCH ~133.35 mm DDR4 RDIMM | 128GB | 3200MHz | PC4 Notch position = DDR4 generation | DDR3/DDR4/DDR5 physically incompatible RDIMM = Registered (servers) | LRDIMM = Load-Reduced | UDIMM = Unbuffered TITLE DDR4 RDIMM PN SM37A21456 MFR LENOVO 128GB 3200MHz
KEY FEATURES
•
128GB Capacity
•
3200MHz 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 3
4X77A08636CompatiblePARTNER
IBM 128Gb PC4-3200AA-R ECC REG QR x4 3DS DIMM for ThinkSystem - Option
compatible
02JK973CompatiblePARTNER
IBM 128Gb PC4-3200AA-R ECC REG QR x4 3DS DIMM for ThinkSystem - FRU
compatible
03GY697CompatiblePARTNER
IBM 128Gb PC4-3200AA-R ECC REG QR x4 3DS DIMM for ThinkSystem - FRU
compatible
LIFECYCLE

No lifecycle data available.

THIS PART SUBSTITUTES FOR 3
02JK973SUBSTITUTE
IBM 128Gb PC4-3200AA-R ECC REG QR x4 3DS DIMM for ThinkSystem - P/N
LENOVO
03GY697SUBSTITUTE
IBM 128Gb PC4-3200AA-R ECC REG QR x4 3DS DIMM for ThinkSystem - P/N
LENOVO
4X77A08636SUBSTITUTE
IBM 128Gb PC4-3200AA-R ECC REG QR x4 3DS DIMM for ThinkSystem - P/N
LENOVO
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FREQUENTLY ASKED QUESTIONS
What is SM37A21456?
SM37A21456 is a IBM 128Gb PC4-3200AA-R ECC REG QR x4 3DS DIMM for ThinkSystem - FRU manufactured by LENOVO.
What parts can replace SM37A21456?
There are 3 known substitutes for SM37A21456: 4X77A08636, 02JK973, 03GY697. 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.