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44T1573 — 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 PC3-10600E 1333Mhz ECC UB DR x8 CAS-9 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
44T1573
SPECIFICATIONS
Part Number44T1573
ManufacturerIBM
Capacity2GB
Speed1333MHz
FITS THESE MACHINES
Lenovo System x x3500 M3
Lenovo System x x3550 M3
Lenovo System x x3650 M3
Lenovo System x3200 M3
Lenovo System x3250 M3
Lenovo System x3400 M3
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 44T1573 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 3
44T1569CompatiblePARTNER
IBM 2Gb PC3-10600E 1333Mhz ECC UB DR x8 CAS-9 (1x2Gb) Memory Kit for M2/M3 - Option
compatible
43X5291CompatiblePARTNER
IBM 2GB Pc3-10600e 1333MHZ ECC Ub Dr X8 Cas-9 Dimm - P/n
compatible
44T1565CompatiblePARTNER
IBM 2GB Pc3-10600e 1333MHZ ECC Ub Dr X8 Cas-9 Dimm - Sbb
compatible
LIFECYCLE

No lifecycle data available.

THIS PART SUBSTITUTES FOR 3
43X5291SUBSTITUTE
IBM 2Gb PC3-10600E 1333Mhz ECC UB DR x8 CAS-9 DIMM - FRU
IBM
44T1565SUBSTITUTE
IBM 2Gb PC3-10600E 1333Mhz ECC UB DR x8 CAS-9 DIMM - FRU
IBM
44T1569SUBSTITUTE
IBM 2Gb PC3-10600E 1333Mhz ECC UB DR x8 CAS-9 DIMM - FRU
IBM
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FREQUENTLY ASKED QUESTIONS
What is 44T1573?
44T1573 is a IBM 2Gb PC3-10600E 1333Mhz ECC UB DR x8 CAS-9 DIMM - P/N manufactured by IBM.
What parts can replace 44T1573?
There are 3 known substitutes for 44T1573: 44T1569, 43X5291, 44T1565. Substitute compatibility should be verified for your specific system.
Is 44T1573 still available?
44T1573 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.