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01EM646 — Memory Specs & Substitutes

IBM · DIMM
WHAT YOU NEED TO KNOW
2Rx4 = Dual Rank ×4 chip width (standard server) RDIMM = Registered (servers) | LRDIMM = Load-Reduced (max density)
DDR3 ≠ DDR4 ≠ DDR5 — physically incompatible (notch position)
PRODUCT OVERVIEW

32 GB, 2666 MHz 2RX4 DDR4 IS RDIMM [xref: MEM-DR432L-CL01-ER26 for Micron Technology, Inc. or MEM-DR432L-SL02-ER26 for Samsung Electronics Co., Ltd.] (IBM Power9 9006-22P). Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
01EM646
SPECIFICATIONS
Part Number01EM646
ManufacturerIBM
InterfaceDDR4
Capacity32GB
Speed2666MHz
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+ 181 more verified machines
COMPONENT DIAGRAM
ECC 32GB 2Rx4 PC4 2666MHz RDIMM IBM NOTCH ~133.35 mm DDR4 RDIMM | 32GB | 2666MHz | PC4 Notch position = DDR4 generation | DDR3/DDR4/DDR5 physically incompatible RDIMM = Registered (servers) | LRDIMM = Load-Reduced | UDIMM = Unbuffered TITLE DDR4 RDIMM PN 01EM646 MFR IBM 32GB 2666MHz
KEY FEATURES
•
DDR4 Interface
•
32GB Capacity
•
2666MHz Speed
•
DDR4 RDIMM
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
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE

No lifecycle data available.

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FREQUENTLY ASKED QUESTIONS
What is 01EM646?
01EM646 is a 32 GB, 2666 MHz 2RX4 DDR4 IS RDIMM [xref: MEM-DR432L-CL01-ER26 for Micron Technology, Inc. or MEM-DR432L-SL02-ER26 for Samsung Electronics Co., Ltd.] (IBM Power9 9006-22P) manufactured by IBM.
Is 01EM646 still available?
01EM646 is currently Unknown.
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PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.