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46C0556 — Memory Specs & Substitutes

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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

IBM 8Gb PC3L-10600R 1333Mhz ECC REG DR x4 CAS-9 LV Low Profile DIMM - P/N. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
46C0556
SPECIFICATIONS
Part Number46C0556
ManufacturerIBM
Capacity8GB
Speed1333MHz
COMPONENT DIAGRAM
ECC 8GB 2Rx4 PC4 1333MHz RDIMM IBM NOTCH ~133.35 mm DDR4 RDIMM | 8GB | 1333MHz | PC4 Notch position = DDR4 generation | DDR3/DDR4/DDR5 physically incompatible RDIMM = Registered (servers) | LRDIMM = Load-Reduced | UDIMM = Unbuffered TITLE DDR4 RDIMM PN 46C0556 MFR IBM 8GB 1333MHz
KEY FEATURES
•
8GB Capacity
•
1333MHz Speed
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 3
46C0568Compatible
IBM 8Gb PC3L-10600R 1333Mhz ECC REG DR x4 CAS-9 LV Low Profile (1x8Gb) Memory Kit for HS22/HS22V/HS23/HS23E - Option
compatible
43X5318Compatible
IBM 8Gb PC3L-10600R 1333Mhz ECC REG DR x4 CAS-9 LV Low Profile DIMM - P/N
compatible
46C0580Compatible
IBM 8Gb PC3L-10600R 1333Mhz ECC REG DR x4 CAS-9 LV Low Profile DIMM - FRU
compatible
LIFECYCLE
StatusUNKNOWN
Availability—
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
THIS PART SUBSTITUTES FOR 3
43X5318SUBSTITUTE
IBM 8Gb PC3L-10600R 1333Mhz ECC REG DR x4 CAS-9 LV Low Profile (1x8Gb) Memory Kit for HS22/HS22V/HS23/HS23E - SBB
IBM
46C0568SUBSTITUTE
IBM 8Gb PC3L-10600R 1333Mhz ECC REG DR x4 CAS-9 LV Low Profile (1x8Gb) Memory Kit for HS22/HS22V/HS23/HS23E - SBB
IBM
46C0580SUBSTITUTE
IBM 8Gb PC3L-10600R 1333Mhz ECC REG DR x4 CAS-9 LV Low Profile (1x8Gb) Memory Kit for HS22/HS22V/HS23/HS23E - SBB
IBM
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FREQUENTLY ASKED QUESTIONS
What is 46C0556?
46C0556 is a IBM 8Gb PC3L-10600R 1333Mhz ECC REG DR x4 CAS-9 LV Low Profile DIMM - P/N manufactured by IBM.
What parts can replace 46C0556?
There are 3 known substitutes for 46C0556: 46C0568, 43X5318, 46C0580. Substitute compatibility should be verified for your specific system.
Is 46C0556 still available?
46C0556 is currently Unknown.
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Last verified: September 2026