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47J0256 ✓ Verified by PartsTable
LENOVO · 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

Memory offerings let you upgrade your system's standard memory capacity to improve overall PC system performance. Adding additional memory is a cost-effective way to help boost your system's performance and enhance its ability to run more programs simultaneously. 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→ 47J0256
SPECIFICATIONS
Component forPC/Server
Internal memory32 GB
Memory clock speed2133 MHz
Memory form factor288-pin DIMM
Internal memory typeDDR4
COMPONENT DIAGRAM
ECC 32GB 2Rx4 PC4 1700MHz RDIMM LENOV NOTCH ~133.35 mm DDR4 RDIMM | 32GB | 1700MHz | PC4 Notch position = DDR4 generation | DDR3/DDR4/DDR5 physically incompatible RDIMM = Registered (servers) | LRDIMM = Load-Reduced | UDIMM = Unbuffered TITLE DDR4 RDIMM PN 47J0256 MFR LENOVO 32GB 1700MHz
KEY FEATURES
•
Up to 32 GB
•
DDR4 Interface
•
32GB Capacity
•
1700MHz 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
95Y4808Compatible
IBM 32Gb PC4-2133P-R ECC REG QR x4 CAS-15 (1x32Gb) Memory Kit for M5 / x3850/x3950 X6 - Option
compatible
95Y4807Compatible
IBM 32Gb PC4-2133P-R ECC REG QR x4 CAS-15 (1x32Gb) Memory Kit for M5 / x3850/x3950 X6 - SBB
compatible
95Y4810Compatible
IBM 32GB PC4-2133P-R ECC Reg Qr X4 Cas-15 Dimm - Fru
compatible
LIFECYCLE
StatusUNKNOWN
Availability—
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
THIS PART SUBSTITUTES FOR 3
95Y4807SUBSTITUTE
IBM 32Gb PC4-2133P-R ECC REG QR x4 CAS-15 DIMM - P/N
IBM
95Y4808SUBSTITUTE
IBM 32Gb PC4-2133P-R ECC REG QR x4 CAS-15 DIMM - P/N
IBM
95Y4810SUBSTITUTE
IBM 32Gb PC4-2133P-R ECC REG QR x4 CAS-15 DIMM - P/N
IBM
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FREQUENTLY ASKED QUESTIONS
What is 47J0256?
47J0256 is a Lenovo 32GB TruDDR4 Memory (2Rx4, 1.2V) PC4-17000 CL15 2133M manufactured by LENOVO. It is classified as a MEMORY (RDIMM).
What parts can replace 47J0256?
There are 3 known substitutes for 47J0256: 95Y4808, 95Y4807, 95Y4810. Substitute compatibility should be verified for your specific system.
Is 47J0256 still available?
47J0256 is currently Unknown.
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Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
Last verified: July 2026