3D Vapor Chamber Cools 350W Xeon at 0.095°C/W

Situation

Intel's 5th Gen Xeon Scalable Processors deliver powerful performance, but their sustained power of up to 350W on the Eagle Stream platform poses dual pressures on both thermal design and the Total Cost of Ownership for data center servers. A leading server manufacturer needed to find a thermal solution for its next-generation 1U/2U servers that not only met extreme cooling performance requirements but also offered excellent cost-effectiveness and manufacturability, all while ensuring long-term system reliability.

Task

As their thermal management partner, we were tasked with delivering a mass-producible solution with core objectives:

1. Performance Goal: Achieve a heatsink thermal resistance of ≤ 0.1°C/W under a real 350W load, ensuring no CPU throttling.

2. System Goal: Optimize airflow design to reduce overall system cooling power consumption, helping the client lower their PUE.

3. Commercial Goal: Provide a competitive cost structure and stable mass-production delivery capabilities while meeting the performance benchmark.

Action

We adopted a closed-loop development process of "Simulation-Driven Design + End-to-End Validation":

1. Collaborative Definition & Architectural Innovation: 

   

• Worked closely with the client's engineering team to jointly define design boundaries based on Intel's official specifications.

• Moved beyond conventional designs by adopting our 3D Vapor Chamber TVC002 with a composite architecture of "3D Vapor Chamber + High-Density Extruded Fins". The TVC002's 3DVC rapidly spreads the CPU hot spot laterally, while the extruded base maximizes vertical surface area for heat dissipation, enhancing efficiency in both dimensions.

2. Multi-Objective Simulation & Optimization:

• Conducted multiple rounds of CFD thermal simulations on the TVC002 design, optimizing not just the temperature field but also fine-tuning fin shape and layout. This resulted in a 22% reduction in heatsink airflow resistance, saving power and cost for the client's system fan selection.

• Performed structural mechanical simulations on the TVC002 to ensure heatsink reliability under vibration and shock, meeting the stringent requirements of data center environments.

3. Design for Manufacturability & Empirical Testing:

• Integrated manufacturing process experts during the TVC002 design phase to ensure excellent producibility and consistency for the 3DVC cavity design, welding processes, and material selection.

• Built TVC002 functional prototypes for rigorous testing in a wind tunnel laboratory, using infrared thermal imaging to verify the absence of local hotspots. Conducted over 1,000 hours of aging and reliability testing on the TVC002 to provide data-backed assurance for volume delivery.

Result

The project successfully unified technical performance with commercial value:

1. Outstanding Performance Data (For Technical Audiences):

• The 3D Vapor Chamber TVC002 achieved a measured thermal resistance as low as 0.095°C/W, surpassing the design target by 15%, providing ample thermal headroom for the CPU.

• System-level cooling power consumption was significantly optimized due to the TVC002's reduced airflow resistance.

2. Verifiable Reliability (For Technical & Management Audiences):

• Comprehensive simulation and test reports on the TVC002, along with long-term aging data, demonstrated the solution's stability and reliability.

3. Clear Business Value (For Procurement/Project Manager Audiences):

• The TVC002 solution passed all validation stages and has entered scaled mass production and delivery, supporting the client's rapid global data center deployments.

• The TVC002's lower system cooling power consumption directly contributes to a lower data center PUE, reducing the client's long-term operational expenditure .

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