One I know of is the EU-funded LUMI supercomputer: https://www.lumi-supercomputer.eu/lumis-full-system-architec...

"The AMD MI250X GPU is in a class of its own now and for a long time to come. The technical supremacy and performance per watt were the primary reasons why AMD’s MI250X GPUs were selected for LUMI, explains Pekka Manninen, Director of LUMI Leadership Computing Facility."