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46C7426 ✓ 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 1GB 1X1GB PC2-6400E 1RX8 DIMM

IBM 1GB 1X1GB PC2-6400E 1RX8 DIMM. 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→ 46C7426
SPECIFICATIONS
Part Number46C7426
ManufacturerIBM
Capacity1GB
COMPONENT DIAGRAM
ECC 1GB 2Rx4 PC4 — RDIMM IBM NOTCH ~133.35 mm DDR4 RDIMM | 1GB | — | PC4 Notch position = DDR4 generation | DDR3/DDR4/DDR5 physically incompatible RDIMM = Registered (servers) | LRDIMM = Load-Reduced | UDIMM = Unbuffered TITLE DDR4 RDIMM PN 46C7426 MFR IBM 1GB —
KEY FEATURES
•
1GB 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 2
46C7428Compatible
IBM 2Gb PC2-6400E 800Mhz ECC UB SR x8 CL6 240-Pin (2x1Gb) Memory Kit for x3350 M1/x32x0 M1/M2 - Option
compatible
43X5062Compatible
IBM 1Gb PC2-6400E 800Mhz ECC UB SR x8 CL6 240-Pin (128Mx72) DIMM - P/N
compatible
LIFECYCLE
StatusUNKNOWN
Availability—
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
THIS PART SUBSTITUTES FOR 2
43X5062SUBSTITUTE
IBM 1Gb PC2-6400E 800Mhz ECC UB SR x8 CL6 240-Pin (128Mx72) DIMM - FRU
IBM
46C7428SUBSTITUTE
IBM 1Gb PC2-6400E 800Mhz ECC UB SR x8 CL6 240-Pin (128Mx72) DIMM - FRU
IBM
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FREQUENTLY ASKED QUESTIONS
What is 46C7426?
46C7426 is a IBM 1GB 1x1gb Pc2-6400e 1Rx8 Dimm manufactured by IBM. It is classified as a MEMORY (RDIMM).
What parts can replace 46C7426?
There are 2 known substitutes for 46C7426: 46C7428, 43X5062. Substitute compatibility should be verified for your specific system.
Is 46C7426 still available?
46C7426 is currently Unknown.
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Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
Last verified: July 2026