QCT QuantaGrid D75L-3U

8x B300 Blackwell Ultra rack

Overview

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Peak Dense

2.3 TB

Aggregate Memory

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Aggregate Bandwidth

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Aggregate Power

Configuration

Accelerator: B300 SXM 288GB
Count: 8
Memory per GPU: 288 GB
Bandwidth per GPU: 8.0 TB/s

Power & Efficiency

Aggregate Power: —
TDP per GPU: 1400 W
Efficiency: —
Aggregate Bandwidth: —

System Details

Vendor: QCT

Family: QuantaGrid

Architecture: Blackwell Ultra

Form Factor: rack

Release Year: —

Process Node: 4nm

Interconnect

One NVIDIA HGX B300 8-GPU baseboard with fifth-generation NVLink at 1.8 TB/s; eight onboard ConnectX-8 SuperNICs at up to 800Gb/s for east-west traffic, with up to three further NICs for north-south

Notes

QCT's density play: the same NVIDIA HGX B300 8-GPU baseboard as its 10U sibling, compressed into 3U by liquid cooling and designed for the NVIDIA MGX rack rather than a standalone chassis. It takes power from a 1400A busbar and rack power shelves instead of its own supplies, which is why no power figure appears here at all, and supports DC-SCM. Fifth-generation NVLink runs at 1.8 TB/s, and eight onboard ConnectX-8 SuperNICs handle east-west traffic at up to 800Gb/s. Hosting is two Intel Xeon 6700 P-core processors at up to 350 W. QCT states 2.3 TB of HBM3e per system, which is eight B300 modules at 288 GB apiece; note NVIDIA quotes 2.1 TB for the same baseboard, and this entry keeps QCT's figure since QCT is the one publishing it. No throughput figure is given for this model.