NextFin news, Microsoft has introduced a new microfluidic cooling technology designed to significantly reduce the heat generated by artificial intelligence (AI) chips in data centers. The announcement was made on Wednesday, September 24, 2025, at the company's Redmond campus.
The technology involves etching microscopic channels, comparable in size to human hair, onto the back of silicon chips. Liquid coolant flows directly through these channels, bringing the coolant closer to the heat source than traditional cold plate methods, which are separated by multiple material layers. This direct cooling approach can reduce the maximum silicon temperature rise inside GPUs by up to 65%, according to Microsoft.
Microsoft's research team utilized artificial intelligence to optimize the design of these microchannels, drawing inspiration from natural patterns such as leaf veins and butterfly wings. This nature-inspired design ensures efficient coolant flow without clogging and maintains the structural integrity of the silicon chip.
Tests conducted on server chips used for Office cloud applications and AI GPUs demonstrated that microfluidic cooling is three times more effective at heat removal than conventional cold plate cooling systems. This improvement could allow for more powerful chip architectures, including 3D stacking, by overcoming heat dissipation challenges.
Rani Borkar, Vice President for hardware systems and infrastructure at Microsoft's Azure division, emphasized the importance of efficiency at the scale of Microsoft's data centers, which have added over 2 gigawatts of capacity in the past year. The microfluidic cooling technology is part of a broader strategy to customize hardware and optimize performance across chips, servers, and entire data centers.
Microsoft also highlighted that this cooling innovation could enable servers to be placed closer together physically, reducing latency and improving the reuse of waste heat. The company envisions this technology becoming an industry standard to support the next generation of more efficient and sustainable AI chips.
The development was achieved in collaboration with Swiss startup Corintis, and Microsoft has iterated on the design multiple times over the past year to refine the microchannel patterns and coolant flow.
Overall, this microfluidic cooling breakthrough represents a significant advancement in managing the thermal challenges posed by increasingly powerful AI chips, potentially transforming data center operations and hardware design.
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