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Aluminium finned heatsink with copper base, passive server CPU cooler

SMUGDESK

SMUGDESK Passive CPU Heatsink FRU 46D1407 PN 44X1745 69Y1323 for X3400 M2 M3 X3500 M2 M3

SKU CH-YH5M-FF7Z2

Passive aluminium heatsink with copper base cools Xeon 5500 and 5600 CPUs in X3400 and X3500 M2/M3 tower servers

  • Exact OEM match with FRU 46D1407 PN 44X1745 69Y1323 for X3400 M2 M3 X3500 M2 M3
  • Copper base plus high-density aluminum fins cool Xeon 5500 5600 CPUs efficiently
  • Original fixed bracket gives uniform pressure preventing throttling and unexpected shutdowns
  • Engineered for IBM Calibrated Vectored Cooling airflow layout enabling stable 24/7 operation
  • Direct replacement for maintenance upgrades or broken cooler swaps fully tested before shipment

Exact OEM Server Heatsink

This passive CPU heatsink is an exact OEM replacement for IBM Lenovo System X3400 M2, X3400 M3, X3500 M2 and X3500 M3 tower servers. It matches part numbers FRU 46D1407, PN 44X1745 and 69Y1323 for direct one-to-one installation. The unit is new and fully tested before shipment.

Suited for Xeon 5500 and 5600 maintenance

This cooler suits technicians maintaining or upgrading Intel Xeon 5500 and 5600 series processors in the listed 5U tower models. It is not for builders using different server chassis, other CPU sockets or active cooling requirements. Buyers needing a fan assembly or liquid cooling loop should look elsewhere.

Copper base with aluminum fin stack

The heatsink uses a high-purity copper base that contacts the CPU directly, transferring heat into a dense stacked aluminum fin array. This design relies on the server's calibrated vectored cooling airflow to dissipate thermal load under continuous operation.

Highlights

  • Exact OEM match with FRU 46D1407 PN 44X1745 69Y1323 for X3400 M2 M3 X3500 M2 M3
  • Copper base plus high-density aluminum fins cool Xeon 5500 5600 CPUs efficiently
  • Original fixed bracket gives uniform pressure preventing throttling and unexpected shutdowns
  • Engineered for IBM Calibrated Vectored Cooling airflow layout enabling stable 24/7 operation
  • Direct replacement for maintenance upgrades or broken cooler swaps fully tested before shipment

Specifications

No published specifications for this item yet.

Questions about this item

What server models does the FRU 46D1407 heatsink fit?

The heatsink is an exact OEM replacement for IBM Lenovo System X3400 M2, X3400 M3, X3500 M2 and X3500 M3 5U tower servers, matching part numbers 44X1745 and 69Y1323 for direct one-to-one fit.

How is the copper base secured to the CPU socket bracket?

Integrated locking fasteners lock onto the motherboard CPU socket bracket, providing balanced downward pressure across the processor IHS to prevent thermal paste extrusion and uneven contact.

When should the thermal interface material be replaced on this passive cooler?

Replace the thermal paste whenever the heatsink is removed for CPU upgrade or maintenance, as the copper base must make fresh contact with Xeon 5500 or 5600 series processors for reliable heat transfer.

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