SpaceX Reportedly Building 72-GPU Kessel Rack for Space

A report claims SpaceX is developing its own rack-scale system, called 'Kessel', designed for data centers in space. The design reportedly features 72 Nvidia Rubin GPUs.

What stands out to me is the architecture. According to the report, the system replaces conventional NVLink cable assemblies with an 84-layer printed circuit board serving as the midplane. Moving interconnects onto a board of that scale changes how dense GPU racks can be built, serviced and cooled, and it is the kind of design choice that engineers across hardware and data center teams will want to study.

It also raises a bigger question for the industry: what does it take to run AI infrastructure outside Earth? Power, thermal management, maintenance and reliability all become harder when there is no technician down the hall. Those constraints will shape roles in hardware design, systems engineering and infrastructure operations.

This is still a report, not a confirmed product, so details may shift. Still, it is a useful signal of where AI hardware thinking is heading.