The move lets these high-density systems ditch fans and traditional cooling altogether in favour of a tank of dielectric fluid.

The certified kit supports 4th and 5th Gen Xeon Scalable processors and meets OCP standards for material compatibility and operational reliability.

According to Supermicro, the testing ensures the gear won’t fall apart when fully submerged in the approved cooling fluids.

Supermicro’s senior vice president of technology enablement Ray Pang said the certification “ensures customers that their Supermicro server will be fully functional when immersed in the specified liquid.”

Immersion cooling allows data centres to hit power usage effectiveness (PUE) scores near 1.05 by eliminating air-cooled systems and internal fans. The result is lower energy use, less noise, and fewer airflow headaches.

The system tested, the BigTwin SYS-221BT-HNTR, fits four pluggable nodes in a 2U chassis. Each node supports up to 4TB of DDR5 memory, two PCIe 5.0 x16 slots, and redundant 3000W power supplies.

Intel vice president of platform engineering Rami Khouri said the system passed “the rigorous testing that immersion cooling requires” and offers data centre operators “a clear path to sustainable, efficient cooling in the AI era.”

The Open Compute Project, which has been  standardising immersion hardware and practices, gave the thumbs-up.

OCP’s senior director of community, Michael Schill, credited Supermicro with playing a key role in shaping its immersion cooling efforts.
With demand growing for more efficient thermal management in AI-heavy data centres, immersion setups are starting to look less like experimental tech and more like a practical option.