NVIDIA Grace Blackwell And Grace Blackwell Ultra

Rack SRS-GB300-NVL72

Liquid Cooled Rack-Scale Solution NVIDIA GB300 NVL72 with 72 NVIDIA B300 GPUs and 36 Grace CPUs

Supermicro Products

Liquid Cooled GPU Servers

Rack SRS-GB300-NVL72
Gpus: 72 NVIDIA B300 GPUs via NVIDIA GB300 Grace Blackwell Ultra Superchips | Cpus: 36 NVIDIA Grace CPUs via NVIDIA GB300 Grace Blackwell Ultra Superchips | Gpu Memory: Up to 21 TB HBM3e

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Details that matter

Engineered for professionals who demand the best in performance, security, and design.

72 NVIDIA B300 GPUs

72 NVIDIA B300 GPUs via NVIDIA GB300 Grace Blackwell Ultra Superchips, with up to 21TB HBM3e GPU memory

36 NVIDIA Grace CPUs

36 NVIDIA Grace CPUs with up to 17TB LPDDR5X system memory

1.8TB/s NVLink Fabric

9 NVLink Switches connecting all 72 GPUs with 1.8TB/s GPU-to-GPU interconnect

800Gb/s Compute Fabric

NVIDIA Quantum-X800 InfiniBand or Spectrum-X Ethernet with ConnectX®-8 SuperNICs, plus BlueField-3 DPUs for in-band management

Up to 144 E1.S Drives

Up to 144 E1.S PCIe 5.0 drive bays across 18 1U compute nodes

Liquid Cooling Options

In-rack 250kW CDU standard, with in-row (up to 1.8MW) and L2A sidecar CDU options

132kW Rack Power

8x 1U 33kW power shelves (6x 5.5kW PSUs each), 132kW total

Complete 48U Rack

Fully integrated 48U rack-scale solution with 18 compute nodes

Technical Specifications

Full specifications for the model

SKU	SRS-GB300-NVL72
Gpus	72 NVIDIA B300 GPUs via NVIDIA GB300 Grace Blackwell Ultra Superchips
Cpus	36 NVIDIA Grace CPUs via NVIDIA GB300 Grace Blackwell Ultra Superchips
Gpu Memory	Up to 21 TB HBM3e
System Memory	Up to 17 TB LPDDR5X
Storage	Up to 144 E1.S PCIe 5.0 drive bays
Nodes	18x 1U ARS-121GL-NB3
Networking	9x NVLink Switch, 4-ports per compute tray connecting 72 GPUs to provide 1.8TB/s GPU-to-GPU interconnect
Power	8x 1U 33kW (6x 5.5kW PSUs), total power 132kW
Liquid Cooling	1x in-rack Supermicro 250kW capacity CDU with redundant PSU and dual hot-swap pumps
Rack Enclosure	48U, 19”-width
Dimensions	W 600 x D 1068 x H 2236
Compute Fabric	NVIDIA Quantum-X800 InfiniBand or NVIDIA Spectrum-X Ethernet with integrated NVIDIA ConnectX®-8 SuperNICs for up to 800Gb/s compute fabric
In Band Network	Up to 200Gb/s In-Band Management speeds with NVIDIA BlueField-3 DPUs
Out Of Band Network	1G/10G Ethernet out-of-band management
Liquid Cooling Options	In-Rack CDU: Up to 250 kW capacity CDU with N+1 redundant pumps In-Row CDU: Up to 1.8 MW capacity CDU with N+1 redundant pumps (supports up to 8 racks) L2A Sidecar CDU: Up to 200 kW capacity CDU with N+1 redundant pumps (no facility water required)

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Rack SRS-GB300-NVL72