412-AALN: Dell PowerEdge R740 High Performance 2U CPU Heatsink (>150W TDP)
Also listed as: 0TRD35, TRD35
The Dell 412-AALN is a Dell PowerEdge R740 High Performance 2U CPU Heatsink (>150W TDP) providing efficient heat dissipation for high-TDP processors in Dell PowerEdge R740, R740XD servers.
Specifications
| Part number | 412-AALN |
|---|---|
| Brand | Dell |
| Type | Heatsinks |
| Other numbers | 0TRD35, TRD35 |
| Status | current |
| Form factor | 2U High Performance Copper Heat-Pipe Heatsink |
| Tdp (W) | 205 |
| Generation fit | 14th Generation PowerEdge (Socket LGA3647) |
About the 412-AALN
The Dell 412-AALN is a Dell PowerEdge R740 High Performance 2U CPU Heatsink (>150W TDP) designed to dissipate thermal energy from high-performance processors in Dell PowerEdge servers. Engineered with copper heat pipes or vapor chambers and stacked aluminum cooling fins, the 412-AALN transfers heat efficiently into chassis airflow streams.
Compatibility
Compatible with processor sockets on Dell PowerEdge R740, R740XD systems, the 412-AALN matches chassis airflow shroud dimensions and processor TDP ratings. The 412-AALN mounts securely to motherboard retention brackets using spring-loaded Torx screws to ensure balanced contact pressure across the CPU IHS.
How to identify a genuine unit
Authentic Dell heatsinks feature an etched or labeled DP/N 0TRD35, mechanical alignment pin guides, and CPU socket designation. Cooling fin assemblies on the 412-AALN are finished with uniform anti-corrosion plating, and factory thermal interface material pads or protective plastic covers protect the polished copper contact base during shipping.
Buying used
When purchasing a used 412-AALN, inspect the aluminum cooling fins for bending, crushing, or particulate blockage that restricts airflow. Check the copper contact base of the 412-AALN for deep scratches or gouges that could impede thermal conductivity, and verify that all spring-loaded retention screws turn smoothly.
Fits these models
Check compatibility with Dell
Before you buy, confirm the exact configuration against the vendor's own lists: firmware levels, operating systems, adapters and optics that Dell has tested with the Dell 412-AALN.
- Compatibility Dell E-Lab Navigator (storage and SAN interoperability) (free vendor sign-in)
- Support Dell Support: drivers, manuals and service tag lookup
Equivalent part numbers
- Dell TRD35 Dell direct spare part number for R740 High Performance Heatsink
FAQ
Why does this heatsink have copper heat pipes protruding from the side?
Heat pipes transfer thermal energy directly from the CPU cold plate to secondary cooling fin stacks positioned in the primary airflow path.
Does this heatsink include the CPU carrier clip?
The heatsink attaches to the plastic CPU carrier clip (e.g. 0DXD9H / LGA3647 clip), which is typically sold with the CPU or as a separate spare.
Buying or selling 412-AALN?
New, refurbished or used. Tell us the quantity and condition and we connect you with a vetted reseller in your region, usually within one working day.
Sources
- Dell PowerEdge R740 High Performance Heatsink Specifications, checked 2026-10-27