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49Y1423 — 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 2Gb PC3L-10600R 1333Mhz ECC REG SR x8 CAS-9 LV 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
49Y1423
SPECIFICATIONS
Part Number49Y1423
ManufacturerIBM
Capacity2GB
Speed1333MHz
FITS THESE MACHINES
Lenovo System x IBM System x3650 M4
Lenovo System x iDataPlex dx360 Server M3
Lenovo System x x3500 M3
Lenovo System x x3550 M3
Lenovo System x x3650 M3
Lenovo System x x3690 X5
Lenovo System x3200 M3
Lenovo System x3250 M3
Lenovo System x3300 M4
Lenovo System x3400 M3
Lenovo System x3500 M4
Lenovo System x3530 M4
Lenovo System x3550 M4
Lenovo System x3620 M3
Lenovo System x3630 M3
Lenovo System x3630 M4
Lenovo System x3755 M3
Lenovo System x3850 X5
COMPONENT DIAGRAM
ECC 2GB 2Rx4 PC4 1333MHz RDIMM IBM NOTCH ~133.35 mm DDR4 RDIMM | 2GB | 1333MHz | PC4 Notch position = DDR4 generation | DDR3/DDR4/DDR5 physically incompatible RDIMM = Registered (servers) | LRDIMM = Load-Reduced | UDIMM = Unbuffered TITLE DDR4 RDIMM PN 49Y1423 MFR IBM 2GB 1333MHz
KEY FEATURES
•
2GB 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
49Y1405CompatiblePARTNER
IBM 2Gb PC3L-10600R 1333Mhz ECC REG SR x8 CAS-9 LV (1x2Gb) Memory Kit for M3/M4 - Option
compatible
47J0144CompatiblePARTNER
IBM 2GB Pc3l-10600r 1333MHZ ECC Reg Sr X8 Cas-9 Lv Dimm - P/n
compatible
49Y1387CompatiblePARTNER
IBM 2GB Pc3l-10600r 1333MHZ ECC Reg Sr X8 Cas-9 Lv Dimm - Sbb
compatible
90Y4550CompatiblePARTNER
IBM 2Gb PC3L-10600R 1333Mhz ECC REG SR x8 CAS-9 LV (1x2Gb) Memory Kit for M3/M4 - Option
compatible
LIFECYCLE

No lifecycle data available.

THIS PART SUBSTITUTES FOR 4
90Y4550SUBSTITUTE
IBM 2Gb PC3L-10600R 1333Mhz ECC REG SR x8 CAS-9 LV DIMM - FRU
IBM
47J0144SUBSTITUTE
IBM 2Gb PC3L-10600R 1333Mhz ECC REG SR x8 CAS-9 LV DIMM - FRU
IBM
49Y1387SUBSTITUTE
IBM 2Gb PC3L-10600R 1333Mhz ECC REG SR x8 CAS-9 LV DIMM - FRU
IBM
49Y1405SUBSTITUTE
IBM 2Gb PC3L-10600R 1333Mhz ECC REG SR x8 CAS-9 LV DIMM - FRU
IBM
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FREQUENTLY ASKED QUESTIONS
What is 49Y1423?
49Y1423 is a IBM 2Gb PC3L-10600R 1333Mhz ECC REG SR x8 CAS-9 LV DIMM - P/N manufactured by IBM.
What parts can replace 49Y1423?
There are 4 known substitutes for 49Y1423: 49Y1405, 47J0144, 49Y1387 and 1 more. Substitute compatibility should be verified for your specific system.
Is 49Y1423 still available?
49Y1423 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.