GoKawiilSpaceX reportedly builds custom 72-GPU Nvidia Rubin rack for space data centers
According to SemiAnalysis, SpaceX and xAI are developing a modified version of Nvidia's Vera Rubin NVL72 rack system, codenamed Kessel, that swaps standard NVLink cable assemblies for an 84-layer printed circuit board midplane. The system keeps the core configuration of 36 Vera CPUs and 72 Rubin GPUs across 18 compute trays and nine NVLink switch trays, but uses a different solid-state interconnect design intended for both ground and orbital data centers.