Supermicro SRS-GB300-NVL72

The Supermicro SRS-GB300-NVL72 is a liquid-cooled rack with 72 NVIDIA B300 GPUs and 36 Grace CPUs, delivering 1.1 ExaFLOPS and 20.7TB of HBM3e for trillion-parameter LLM training and inference.

Overview

The Supermicro SRS-GB300-NVL72 is a liquid-cooled, rack-scale AI system based on the NVIDIA Blackwell Ultra platform. It integrates 72 NVIDIA B300 GPUs and 36 NVIDIA Grace CPUs into a single, massive NVLink domain, specifically designed for large-scale AI training and high-throughput reasoning.

Key Technical Specifications

FeatureSpecificationForm Factor48U Liquid-Cooled RackGPU Configuration72x NVIDIA B300 (Blackwell Ultra) Tensor Core GPUsCPU Configuration36x NVIDIA Grace™ CPUs (Arm-based Neoverse V2)Total CPU Cores2,592 Arm Neoverse V2 cores (72 cores per CPU)GPU Memory20.7 TB total HBM3e (~288GB per GPU)System Memory17.2 TB total LPDDR5X (~480GB per CPU)Performance (FP4)~1.1 ExaFLOPS (Dense)NVLink Bandwidth1.8 TB/s per GPU (130 TB/s total rack bandwidth)NetworkingNVIDIA ConnectX-8 SuperNIC (up to 800 Gb/s)DPU SupportNVIDIA BlueField-3 DPUsStorageUp to 144x E1.S PCIe 5.0 NVMe drive bays

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