The Intel Birch Stream cold plate delivers 500 W thermal dissipation at just 5 kPa pressure drop and 1.0 LPM flow rate, with a 1.0 MPa maximum pressure rating — the highest in ToneCooling’s AI server cold plate portfolio. This 130 × 90 × 25 mm Purple Copper T2 cold plate is purpose-built for Intel’s next-generation Xeon server platform, providing efficient liquid cooling for AI edge inference, enterprise HPC, and telecom deployments where high system pressures are standard.
“Intel Birch Stream processors are deployed in a broader range of facility environments than typical hyperscale GPUs — from standard data centers to telecom central offices and edge compute sites with long piping runs,” explains Dr. Kelvin Chen, Chief Thermal Engineer at ToneCooling. “Our 1.0 MPa pressure rating ensures the cold plate performs reliably in any facility architecture, including high-elevation sites where system pressures are inherently elevated.”
Intel Birch Stream Cold Plate — Complete Specifications
| Parameter | Specification |
| Cooling Capacity | 500 W |
| Cold Plate Material | Purple Copper T2 (C1100, 391 W/m·K) |
| Cold Plate Dimensions | 130 × 90 × 25 mm |
| Internal Geometry | CNC micro-channel |
| Pressure Drop | 5 kPa @ 1.0 LPM |
| Nominal Flow Rate | 1.0 LPM |
| Coolant | 25% Ethylene Glycol-Water (EGW) |
| Maximum Operating Pressure | 1.0 MPa |
| Leak Testing | 100% helium leak test at 1.0 MPa |
| Socket Compatibility | Intel Birch Stream (LGA 7529) |
| Mounting | Birch Stream socket-matched bracket |
Intel Birch Stream Platform — Next-Generation Xeon
Intel’s Birch Stream is the next-generation Xeon Scalable processor platform, succeeding Granite Rapids with increased core counts, higher memory bandwidth, and AI acceleration capabilities. At 500 W TDP, Birch Stream represents a significant power increase over previous Xeon generations, placing it firmly in the liquid-cooling-required category for high-density rack deployments.
Birch Stream processors target three primary deployment categories where ToneCooling’s cold plate provides critical thermal management:
- AI edge inference — Birch Stream’s integrated AI accelerators enable inference workloads at the network edge, where compact servers must operate in environments with limited cooling infrastructure.
- Enterprise HPC — High-core-count Birch Stream SKUs power engineering simulation, financial modeling, and scientific computing workloads that require sustained maximum clock speeds.
- Telecom central office — 5G core network functions increasingly run on Xeon platforms, deployed in telecom facilities with long coolant piping runs and elevated system pressures.
1.0 MPa High-Pressure Design
The defining feature of ToneCooling’s Birch Stream cold plate is its 1.0 MPa maximum operating pressure — 67% higher than standard 0.6 MPa cold plates. This high-pressure capability addresses real-world deployment challenges:
Long-distance CDU piping: Telecom and edge facilities often locate CDUs hundreds of meters from server racks. The pressure losses in these long piping runs can exceed 0.4 MPa, leaving insufficient pressure budget for standard 0.6 MPa cold plates. The 1.0 MPa rating provides adequate margin for piping runs up to 500 meters.
High-elevation installations: Data centers at high altitudes experience different atmospheric pressure conditions. The 1.0 MPa rating ensures reliable operation regardless of facility elevation.
High-flow CDU architectures: Some facility designs use high-pressure CDU pumps to maintain consistent flow across large numbers of nodes. The 1.0 MPa rating ensures compatibility with these aggressive hydraulic architectures.
All wetted components — cold plate body, brazed joints, fittings, and hoses — are rated and tested to 1.0 MPa, with burst testing at 2.0 MPa confirming a 2× safety margin.
Compact 130 × 90 × 25 mm Form Factor
The Birch Stream cold plate’s compact dimensions are optimized for the LGA 7529 socket’s IHS geometry. At 130 × 90 mm, the cold plate provides full coverage of the processor’s heat-generating area while fitting within the tight mechanical envelope of 1U and 2U server chassis.
The 25 mm total height includes the cold plate body, mounting hardware, and TIM interface — leaving maximum vertical clearance for memory DIMMs, VRM heatsinks, and other motherboard components in space-constrained server designs.
Thermal Performance at 500 W
At 500 W TDP and 1.0 LPM flow rate with 25% EGW coolant, the cold plate maintains processor junction temperatures well within Intel’s thermal specification. The 5 kPa pressure drop at nominal flow is modest, allowing CDU systems to serve large numbers of Birch Stream nodes without oversized pump capacity.
The thermal design provides margin for transient power spikes above 500 W that occur during burst workloads, ensuring stable operation without thermal throttling even during peak demand periods.
25% EGW Coolant Compatibility
The Birch Stream cold plate uses 25% ethylene glycol-water (EGW) coolant, providing freeze protection to approximately -12 °C. This coolant choice reflects the diverse deployment environments for Birch Stream servers:
- Outdoor CDU systems in cold-climate regions
- Telecom central offices with variable HVAC conditions
- Edge compute sites with minimal environmental control
- Mixed-platform facilities sharing CDU infrastructure with EGW-based GPU cooling zones
Quality Validation
- Helium leak testing — 100% production units at 1.0 MPa (full rated pressure)
- Burst pressure testing — Lot samples at 2.0 MPa (2× safety margin)
- Thermal resistance verification — Validated at 500 W with calibrated heater matching LGA 7529 IHS
- Pressure-drop confirmation — Flow-bench testing at 0.5, 1.0, and 1.5 LPM
- Thermal cycling endurance — 200+ hours, 25 °C to 80 °C
- Dimensional inspection — CMM measurement to ±0.05 mm on all critical features
Ordering and OEM Support
- Engineering samples: Available within 12 business days
- Volume production: Monthly capacity supporting 8,000+ cold plate assemblies
- Custom variants: Modified pressure ratings, alternative fitting types, and custom hose configurations for OEM-specific requirements
Contact ToneCooling at tonecooling.com/contact to request Birch Stream cold plate samples or discuss your Intel Xeon liquid cooling requirements.
Frequently Asked Questions
What makes the Birch Stream cold plate different from other CPU cold plates?
The Birch Stream cold plate features a 1.0 MPa maximum pressure rating — the highest in ToneCooling’s AI server portfolio. This enables deployment in telecom facilities, edge sites, and data centers with long CDU piping runs where standard 0.6 MPa cold plates cannot operate reliably.
What is the cooling capacity of the Birch Stream cold plate?
The cold plate delivers 500 W thermal dissipation capacity, matching the full TDP of Intel Birch Stream Xeon processors. The design provides additional margin for transient power spikes during burst workloads.
Why does the Birch Stream kit use EGW coolant instead of pure water?
Birch Stream servers are deployed in diverse environments including telecom central offices, edge compute sites, and data centers with outdoor CDUs. The 25% EGW mixture provides freeze protection to -12 °C, ensuring year-round operation in all deployment scenarios.
Can this cold plate be used in 1U server chassis?
Yes. The 130 × 90 × 25 mm form factor is designed to fit within 1U and 2U server mechanical envelopes, with total height (including mounting hardware) optimized to clear memory DIMMs and VRM components.
What pressure testing does each unit undergo?
Every production unit undergoes 100% helium leak testing at full rated pressure (1.0 MPa). Lot samples are burst-tested at 2.0 MPa to verify the 2× safety margin. This is the most rigorous pressure testing protocol in ToneCooling’s CPU cold plate line.
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For industry standards and best practices, refer to ASHRAE thermal guidelines.
Industry References & Standards
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Intel Birch Stream Cold Plate is a high-performance thermal management solution engineered by ToneCooling for demanding applications.
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Why Choose ToneCooling for Intel Birch Stream Cold Plate
ToneCooling has manufactured over 50,000 intel birch stream cold plate units for global OEM customers. Our intel birch stream cold plate production features vacuum brazing furnaces below 10⁻⁴ mbar, FSW machines with ≤0.02mm flatness, and helium leak detection at 10⁻⁸ mbar·L/s. Every intel birch stream cold plate undergoes 100% pressure testing at 25 bar.
Our engineering team provides free intel birch stream cold plate design consultation, CFD simulation, and rapid prototyping in 7-14 days. Production intel birch stream cold plate orders ship in 4-6 weeks under ISO 9001:2015 quality management.
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Last Updated: 2026-04-08
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