Two Types of CDU Feature Comparison & Product Specifications

No Primary Coolant, 32kW in 10U: BOYD's Air-Liquid CDU Brings Liquid Cooling to Any Rack

Liquid-liquid CDUs require primary coolant supply, while air-liquid CDUs dissipate heat directly to surrounding air—simpler and better suited for renovation. BOYD has launched a 10U air-liquid CDU delivering up to 32kW cooling capacity with 45°C maximum inlet air temperature and 1.5-inch sanitary clamp interfaces. N+1 redundant power modules, fans and pumps, plus real-time monitoring, automatic refilling and leakage detection, optimize PUE. It provides dependable thermal protection for GPU and high-density servers across rack, row and containerized cooling. EXTRCOOL offers dual-mode CDUs, manifold assemblies, cold plates, rear-door heat exchangers, dry coolers and containerized systems.

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Area 51, NV, USA

EXTRCOOL INDUSTRY LIMITED

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The CDU, the Heart and Brain Liquid Cooling Cannot Do Without

Silent When Healthy, Fatal When Failing: The Five Selection Questions That Decide Whether the CDU Holds the Loop Together

The CDU plays the role the heart plays: it produces no cold, but without it the coolant never moves. Its heart role pumps and distributes via the manifold, while its brain role senses and controls. Selection answers five questions: total flow above all cold plate minimums, head above maximum loop resistance, exchanger capacity above peak load with fouling margin, redunda...

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The Manifold That Decides Where the Coolant Goes

From CDU to Cold Plate and Back: How the Manifold's Flow Distribution, Not Total Flow, Decides Precision Cooling

Rising AI GPU power is moving liquid cooling from whether it can cool to cooling precisely, and the manifold decides whether coolant reaches every position as it should. It distributes coolant through main channels to parallel branches and collects the heated return, following CDU to supply manifold to cold plate to return manifold to CDU. Poor design lets near-end branc...

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How a Liquid Cooling Manifold Gets Made, from Material to Final Acceptance

316L to Helium Testing: The Four Links—Material, Machining, Cleanliness and Verification—That Decide Manifold Quality

Manifold manufacturing starts with material, and 316L is the safer default, with coolant compatibility outweighing thermal conductivity. CNC machining forms main channels, branches and interface holes, where holding channel positions matters more than drilling; one-piece machining avoids weld deformation, while tube and plate assemblies add laser, TIG or brazing. Deburri...

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water cooling system

coolant system

CDU-LTA Rack

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