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39M5820 ✓ 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 PC2-3200 184PIN DIMM CL3 ECC DDR 400 SDRAM

IBM 512Mb PC2-3200 184PIN DIMM CL3 ECC DDR 400 SDRAM. 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→ 39M5820
SPECIFICATIONS
Part Number39M5820
ManufacturerIBM
Capacity512MB
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 39M5820 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
39M5821Compatible
IBM 1Gb PC2-3200R 400Mhz ECC REG SR x4 CL3 240-Pin (2x512Mb) Memory Kit - Option
compatible
38L5091Compatible
IBM 512Mb PC2-3200R 400Mhz ECC REG SR x4 CL3 240-Pin (64Mx72) DIMM - P/N
compatible
38L5914Compatible
IBM 512Mb PC2-3200R 400Mhz ECC REG SR x4 CL3 240-Pin (64Mx72) DIMM - P/N
compatible
73P2865Compatible
IBM 1Gb PC2-3200R 400Mhz ECC REG SR x4 CL3 240-Pin (2x512Mb) Memory Kit - Option
compatible
73P2869Compatible
IBM 512Mb PC2-3200R 400Mhz ECC REG SR x4 CL3 240-Pin (64Mx72) DIMM - FRU
compatible
LIFECYCLE
StatusUNKNOWN
Availability—
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
THIS PART SUBSTITUTES FOR 5
38L5091SUBSTITUTE
IBM 512Mb PC2-3200R 400Mhz ECC REG SR x4 CL3 240-Pin (64Mx72) DIMM - FRU
IBM
38L5914SUBSTITUTE
IBM 512Mb PC2-3200R 400Mhz ECC REG SR x4 CL3 240-Pin (64Mx72) DIMM - FRU
IBM
39M5821SUBSTITUTE
IBM 512Mb PC2-3200R 400Mhz ECC REG SR x4 CL3 240-Pin (64Mx72) DIMM - FRU
IBM
73P2865SUBSTITUTE
IBM 512Mb PC2-3200R 400Mhz ECC REG SR x4 CL3 240-Pin (64Mx72) DIMM - FRU
IBM
73P2869SUBSTITUTE
IBM 512Mb PC2-3200R 400Mhz ECC REG SR x4 CL3 240-Pin (64Mx72) DIMM - FRU
IBM
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FREQUENTLY ASKED QUESTIONS
What is 39M5820?
39M5820 is a IBM 512MB Pc2-3200 184PIN Dimm Cl3 ECC Ddr 400 Sdram manufactured by IBM. It is classified as a MEMORY (RDIMM).
What parts can replace 39M5820?
There are 5 known substitutes for 39M5820: 39M5821, 38L5091, 38L5914 and 2 more. Substitute compatibility should be verified for your specific system.
Is 39M5820 still available?
39M5820 is currently Unknown.
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Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
Last verified: July 2026