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81Y4518 — Technical Data Sheet

IBM · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

IBM 640Gb High IOPS MLC Duo PCI-E 2.0x8 Controller - SBB. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
81Y4518
SPECIFICATIONS
Part Number81Y4518
ManufacturerIBM
Capacity640GB
FITS THESE MACHINES
Lenovo System x x3550 M3
Lenovo System x x3650 M3
Lenovo System x x3690 X5
Lenovo System x3750 M4
Lenovo System x3850 X5
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR MFR: IBM CAP: 640GB IBM 640Gb High IOPS MLC Duo PCI-E 2.0x8 Controller - SB... TITLE COMPONENT PN 81Y4518 MFR IBM IBM 640Gb High IOPS ML
KEY FEATURES
•
640GB Capacity
SUBSTITUTES & CROSS-REFERENCES 4
81Y4519CompatiblePARTNER
IBM 640Gb High IOPS MLC Duo PCI-E 2.0x8 Controller - Option
compatible
68Y7325CompatiblePARTNER
IBM 640Gb High IOPS MLC Duo PCI-E 2.0x8 Controller - Option
compatible
68Y7382CompatiblePARTNER
IBM 640Gb High IOPS MLC Duo PCI-E 2.0x8 Controller - FRU
compatible
68Y7383CompatiblePARTNER
IBM 640Gb High IOPS MLC Duo PCI-E 2.0x8 Controller - SBB
compatible
LIFECYCLE

No lifecycle data available.

THIS PART SUBSTITUTES FOR 4
68Y7325SUBSTITUTE
IBM 640Gb High IOPS MLC Duo PCI-E 2.0x8 Controller - FRU
IBM
68Y7382SUBSTITUTE
IBM 640Gb High IOPS MLC Duo PCI-E 2.0x8 Controller - FRU
IBM
68Y7383SUBSTITUTE
IBM 640Gb High IOPS MLC Duo PCI-E 2.0x8 Controller - FRU
IBM
81Y4519SUBSTITUTE
IBM 640Gb High IOPS MLC Duo PCI-E 2.0x8 Controller - FRU
IBM
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FREQUENTLY ASKED QUESTIONS
What is 81Y4518?
81Y4518 is a IBM 640Gb High IOPS MLC Duo PCI-E 2.0x8 Controller - SBB manufactured by IBM.
What parts can replace 81Y4518?
There are 4 known substitutes for 81Y4518: 81Y4519, 68Y7325, 68Y7382 and 1 more. Substitute compatibility should be verified for your specific system.
Is 81Y4518 still available?
81Y4518 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.