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Technical Data Sheet
4ZC7A15142 ✓ Verified by PartsTable
LENOVO · MEMORY · UDIMM
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 ST50 server supports Lenovo TruDDR4 memory. TruDDR4 memory uses the highest-quality components sourced from Tier 1 DRAM suppliers and only memory that meets strict requirements is selected. It is compatibility-tested and tuned to maximize performance and reliability.

Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
MEMORY UDIMM 4ZC7A15142
SPECIFICATIONS
ECCYes
Component forPC/Server
Memory ranking2
Memory voltage1.2 V
Internal memory32 GB
Memory clock speed2666 MHz
Memory form factor288-pin DIMM
Compatible productsST250, SR150, SR250
Buffered memory typeUnregistered (unbuffered)
Internal memory typeDDR4
Harmonized System (HS) code84733020
Memory layout (modules x size)1 x 32 GB
COMPONENT DIAGRAM
ECC 32GB 2Rx4 PC4 2666MHz UDIMM LENOV NOTCH ~133.35 mm DDR4 UDIMM | 32GB | 2666MHz | PC4 Notch position = DDR4 generation | DDR3/DDR4/DDR5 physically incompatible RDIMM = Registered (servers) | LRDIMM = Load-Reduced | UDIMM = Unbuffered TITLE DDR4 UDIMM PN 4ZC7A15142 MFR LENOVO 32GB 2666MHz
KEY FEATURES
Up to 32 GB
DDR4 Interface
32GB 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 2
02JG706Compatible
IBM 32Gb PC4-2666V-E ECC UB DR x8 DIMM for ThinkSystem - FRU
compatible
SM37A21440Compatible
IBM 32Gb PC4-2666V-E ECC UB DR x8 DIMM for ThinkSystem - P/N
compatible
LIFECYCLE
StatusUNKNOWN
Availability
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
THIS PART SUBSTITUTES FOR 2
SM37A21440SUBSTITUTE
IBM 32Gb PC4-2666V-E ECC UB DR x8 DIMM for ThinkSystem - Option
LENOVO
02JG706SUBSTITUTE
IBM 32Gb PC4-2666V-E ECC UB DR x8 DIMM for ThinkSystem - Option
LENOVO
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FREQUENTLY ASKED QUESTIONS
What is 4ZC7A15142?
4ZC7A15142 is a Lenovo ThinkSystem 32GB TruDDR4 2666MHz (2Rx8 1.2V) UDIMM manufactured by LENOVO. It is classified as a MEMORY (UDIMM).
What parts can replace 4ZC7A15142?
There are 2 known substitutes for 4ZC7A15142: 02JG706, SM37A21440. Substitute compatibility should be verified for your specific system.
Is 4ZC7A15142 still available?
4ZC7A15142 is currently Unknown.
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