The Unassuming Part That May Decide Rubin's Mass Production Pace

3.5MPa, 100,000 Cycles and 0.03mm Flatness: Why the Manifold, Not the FLOPS, Caps Rubin's Ramp

Beyond Vera Rubin's 3.6 ExaFLOPS, the real game changer is the 100% liquid-cooled NVL72 rack integrating 72 Rubin GPUs and 36 Vera CPUs, and the unassuming part that decides mass production pace is the liquid cooling manifold—the main road between CDU and cold plates, where one leak costs a server, a rack or an entire room. China's GB/T 45287-2025 demands at least 3.5MPa, 100,000 cycles and Ra ≤0.8μm. Karrie International shipped its first Vera Rubin products in September 2026, entering mass production in fiscal Q2 2026/27. AI chip liquid cooling penetration rises from 33% in 2025 to 53% in 2026 and near 60% in 2027. EXTRCOOL provides one-stop liquid cooling solutions.

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Area 51, NV, USA

EXTRCOOL INDUSTRY LIMITED

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