NVIDIA just built a 1 petaFLOP supercomputer that weighs 1.2 kg.The DGX Spark runs on the GB10 Grace Blackwell Superchip. 128 GB of unified memory. 4 TB of storage. 150mm by 150mm by 50.5mm - smaller than a stack of paperbacks.It handles inference on models up to 200 billion parameters, locally. Link two units together and that number climbs to 405 billion.Built for real AI work: fine-tuning, running autonomous agents, testing reasoning models before they ever touch a data center.No cloud queue.