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Technical Data Sheet
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81Y6746 — Technical Data Sheet

IBM · MOTHERBOARD
WHAT YOU NEED TO KNOW
System board replacement = re-license iLO/DRAC (license tied to board) Board determines max CPU gen, max memory speed, PCIe lanes
Server generation MUST match — Gen9 board ≠ Gen10 board
PRODUCT OVERVIEW
HotSpring Plan

The IBM X3620 / X3630 M3 System Board is a IBM industrial component. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
81Y6746
SPECIFICATIONS
Part Number81Y6746
ManufacturerIBM
FITS THESE MACHINES
Lenovo System x3620 M3
Lenovo System x3630 M3
COMPONENT DIAGRAM
CPU 0 LGA 4677 PRIMARY CPU 1 LGA 4677 OPTIONAL VRM PHASE 0 VRM PHASE 1 DIMM (CPU0) DIMM (CPU1) PCIe RISERS RISER 1 (x16) RISER 2 (x8) RISER 3 (x8) iLO / BMC MGMT PORT PCH CHIPSET SATA / NVMe / OCP USB · TPM · CTRL SLOT POWER · FRONT PANEL · FAN HEADERS System Board | Dual Socket | 12x DIMM | 3x PCIe Riser | iLO/BMC | SATA/NVMe/OCP TITLE SYSTEM BOARD PN 81Y6746 MFR IBM IBM X3620 / X3630 M3 System Board
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE

No lifecycle data available.

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FREQUENTLY ASKED QUESTIONS
What is 81Y6746?
81Y6746 is a IBM X3620 / X3630 M3 System Board manufactured by IBM.
Is 81Y6746 still available?
81Y6746 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.