Nvidia Grace Hopper GH200
Nvidia superchip — Grace ARM CPU (72 Neoverse V2 cores) + Hopper H100 GPU on the same board, connected via 900 GB/s NVLink-C2C.
Named after Grace Hopper (CS pioneer). 624 GB total memory (480 GB LPDDR5X + 144 GB HBM3e in the v200 version). Powers Alps (Swiss National Supercomputing), Isambard 3 (UK), JUPITER (Germany). Enables "memory coherency" — CPU and GPU see the same data without copying. Competitor: AMD MI300A (also APU-style), Intel Falcon Shores (cancelled).