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77P6500 — IBM 4 GB 667 Mhz RDIMM

✓ Government record, cited
IBM · MEMORY · RDIMM
PRODUCT OVERVIEW
IBM 4 GB 667 MHz RDIMM

77P6500: IBM 4 GB 667 Mhz RDIMM.

The IBM 4 GB 667 Mhz RDIMM is a IBM memory module engineered for enterprise server and workstation platforms requiring validated, high-reliability memory. Key specifications include SPECIAL FEATURES: 8192MB (2X4096MB) RDIMMS, 667 MHZ, 512MB DRAM MB, END ITEM IDENTIFICATION: ATOPS. This part is cataloged in the U.S.

Government catalog under NSN 7025-01-576-3687, 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→ 77P6500
NSN: 7025-01-576-3687
FSC: 7025 — Information Technology Input/output and Storage Devices
CAGE: 30874 — INTERNATIONAL BUSINESS MACHINES CORPORATION DBA IBM (USA)
SPECIFICATIONS
SPECIAL FEATURES8192MB (2X4096MB) RDIMMS, 667 MHZ, 512MB DRAM MB
END ITEM IDENTIFICATIONATOPS
NSN7025-01-576-3687
COMPONENT DIAGRAM
ECC 4GB 2Rx4 PC4 — RDIMM IBM NOTCH ~133.35 mm DDR4 RDIMM | 4GB | — | PC4 Notch position = DDR4 generation | DDR3/DDR4/DDR5 physically incompatible RDIMM = Registered (servers) | LRDIMM = Load-Reduced | UDIMM = Unbuffered TITLE DDR4 RDIMM PN 77P6500 MFR IBM 4GB —
KEY FEATURES
•
4GB 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
SPECIAL FEATURES8192MB (2X4096MB) RDIMMS, 667 MHZ, 512MB DRAM MB
END ITEM IDENTIFICATIONATOPS
OTHER ITEMS IN FSC 7025 — Information Technology Input/output and Storage Devices
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
7025-00-001-2681 7025-00-001-5588 7025-00-001-6998 7025-00-001-6999 7025-00-001-7000 7025-00-001-7025 7025-00-001-7026 7025-00-001-7027
SUBSTITUTES & CROSS-REFERENCES 3
4523SubstituteBROKER-VERIFIED
IBM 4523 8GB (2x 4GB) Memory Kit PC2-5300P
substitute
EBE41AE4ACFA6EESubstituteBROKER-VERIFIED
Elpida 4 GB 667 MHz RDIMM
substitute
40Y0641CompatiblePARTNER
IBM 8Gb PC2-5300R 667Mhz ECC REG DR x4 CL5 240-Pin (2x4Gb) Memory Kit - Option
compatible
LIFECYCLE
NSN statusActive· U.S. Government catalog
Demilitarization required — critical (Q)
THIS PART SUBSTITUTES FOR 1
40Y0641SUBSTITUTE
IBM 4Gb PC2-5300R 667Mhz ECC REG DR x4 CL5 240-Pin DIMM - FRU
IBM
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FREQUENTLY ASKED QUESTIONS
What is 77P6500?
77P6500 is a IBM 4 GB 667 Mhz RDIMM manufactured by IBM. It is classified as a MEMORY (RDIMM).
What parts can replace 77P6500?
There are 3 known substitutes for 77P6500: 4523, EBE41AE4ACFA6EE, 40Y0641. Substitute compatibility should be verified for your specific system.
What is the NSN for 77P6500?
77P6500 is cataloged in the U.S. Government catalog under NSN 7025-01-576-3687. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.