GoKawiilCoolIT pushes fanless AI server racks with near-total liquid heat capture
CoolIT says that above 250 kW per rack, hybrid air-liquid cooling no longer works because the air-side load becomes too large and costly to manage. Its response is a cooling architecture that captures nearly all rack heat in liquid, cutting air cooling to under 1% of the load and enabling fanless server designs built on six generations of modular coldplate technology.
As chip thermal design power keeps rising, heat is no longer confined to processors but spreads into memory, networking, storage and power components that used to rely on simple air cooling. This shift forces server designers to rethink cooling component-by-component rather than applying one CPU-centric solution, which could reshape how AI data centers are engineered as rack densities keep climbing.
- Above 250 kW per rack, hybrid liquid-air cooling becomes impractical due to excessive air-side load.
- CoolIT's approach captures nearly 100% of heat in liquid, allowing fully fanless server designs.
- Rising chip TDPs are pushing heat into memory, networking, storage and power parts, requiring tailored liquid-cooling solutions beyond the processor.
Source: spectrum.ieee.org — Coolit, 2026-09-22
Published there as: “The Future Is Fanless: 100% Heat Capture for Liquid Cooled AI Servers”
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