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PartsTable / MEMORY / 12R8251
12R8251 ✓ Verified by PartsTable
IBM · 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
IBM 512MB 1X512MB PC2-4200 DIMM

IBM 512MB 1X512MB PC2-4200 DIMM. Key specifications include end_item_identification: ENROUTE AUTOMATION MODERNIZATION, part_name_assigned_by_controlling_agency: 512MB DDR2 MEMORY DIMM,200 MHZ MB. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5962-01-555-5408, indicating validated use in U.S. government and defense logistics supply chains. 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→ 12R8251
NSN: 5962-01-555-5408
FSC: 5962
CAGE: 30874 — INTERNATIONAL BUSINESS MACHINES CORPORATION DBA IBM (USA)
SPECIFICATIONS
end_item_identificationENROUTE AUTOMATION MODERNIZATION
part_name_assigned_by_controlling_agency512MB DDR2 MEMORY DIMM,200 MHZ MB
NSN5962-01-555-5408
COMPONENT DIAGRAM
ECC 512MB 2Rx4 PC4 — RDIMM IBM NOTCH ~133.35 mm DDR4 RDIMM | 512MB | — | PC4 Notch position = DDR4 generation | DDR3/DDR4/DDR5 physically incompatible RDIMM = Registered (servers) | LRDIMM = Load-Reduced | UDIMM = Unbuffered TITLE DDR4 RDIMM PN 12R8251 MFR IBM 512MB —
KEY FEATURES
•
512MB Capacity
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
TECHNICAL CHARACTERISTICS (FLIS)
PART NAME ASSIGNED BY CONTROLLING AGENCY512MB DDR2 MEMORY DIMM,200 MHZ MB
END ITEM IDENTIFICATIONENROUTE AUTOMATION MODERNIZATION
VERIFIED SUBSTITUTES & CROSS-REFERENCES 1
9133-55A-1930Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 12R8251?
12R8251 is a IBM 512MB 1x512mb Pc2-4200 Dimm manufactured by IBM. It is classified as a MEMORY (RDIMM).
What parts can replace 12R8251?
There is 1 known substitute for 12R8251: 9133-55A-1930. Substitute compatibility should be verified for your specific system.
What is the NSN for 12R8251?
12R8251 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5962-01-555-5408. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026