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49Y1388 — 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

IBM 4Gb PC3L-10600R 1333Mhz ECC REG SR x4 CAS-9 LV DIMM - FRU. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
49Y1388
SPECIFICATIONS
Part Number49Y1388
ManufacturerIBM
Capacity4GB
Speed1333MHz
BROWSE IBM MACHINES
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All IBM machines and parts
COMPONENT DIAGRAM
ECC 4GB 2Rx4 PC4 1333MHz RDIMM IBM NOTCH ~133.35 mm DDR4 RDIMM | 4GB | 1333MHz | PC4 Notch position = DDR4 generation | DDR3/DDR4/DDR5 physically incompatible RDIMM = Registered (servers) | LRDIMM = Load-Reduced | UDIMM = Unbuffered TITLE DDR4 RDIMM PN 49Y1388 MFR IBM 4GB 1333MHz
KEY FEATURES
•
4GB 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
SUBSTITUTES & CROSS-REFERENCES 4
49Y1406CompatiblePARTNER
IBM 4Gb PC3L-10600R 1333Mhz ECC REG SR x4 CAS-9 LV (1x4Gb) Memory Kit for M3/M4 - Option
compatible
47J0145CompatiblePARTNER
IBM 4GB Pc3l-10600r 1333MHZ ECC Reg Sr X4 Cas-9 Lv Dimm - P/n
compatible
49Y1424CompatiblePARTNER
IBM 4GB Pc3l-10600r 1333MHZ ECC Reg Sr X4 Cas-9 Lv Dimm - Fru
compatible
90Y4551CompatiblePARTNER
IBM 4Gb PC3L-10600R 1333Mhz ECC REG SR x4 CAS-9 LV (1x4Gb) Memory Kit - Option
compatible
LIFECYCLE

No lifecycle data available.

THIS PART SUBSTITUTES FOR 4
90Y4551SUBSTITUTE
IBM 4Gb PC3L-10600R 1333Mhz ECC REG SR x4 CAS-9 LV (1x4Gb) Memory Kit for M3/M4 - SBB
IBM
47J0145SUBSTITUTE
IBM 4Gb PC3L-10600R 1333Mhz ECC REG SR x4 CAS-9 LV (1x4Gb) Memory Kit for M3/M4 - SBB
IBM
49Y1406SUBSTITUTE
IBM 4Gb PC3L-10600R 1333Mhz ECC REG SR x4 CAS-9 LV (1x4Gb) Memory Kit for M3/M4 - SBB
IBM
49Y1424SUBSTITUTE
IBM 4Gb PC3L-10600R 1333Mhz ECC REG SR x4 CAS-9 LV (1x4Gb) Memory Kit for M3/M4 - SBB
IBM
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FREQUENTLY ASKED QUESTIONS
What is 49Y1388?
49Y1388 is a IBM 4Gb PC3L-10600R 1333Mhz ECC REG SR x4 CAS-9 LV DIMM - FRU manufactured by IBM.
What parts can replace 49Y1388?
There are 4 known substitutes for 49Y1388: 49Y1406, 47J0145, 49Y1424 and 1 more. Substitute compatibility should be verified for your specific system.
Is 49Y1388 still available?
49Y1388 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.