QCT QuantaGrid D75L-3U
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.
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Systems built on this design
11 configurationsBuilt on the NVIDIA HGX B300 8-GPU baseboard, so accelerator performance matches the reference. Chassis, CPU, memory and cooling are this vendor's own.
System Details
GPU Configuration
System Specifications
Precision Performance Breakdown
| Precision | System Performance | Per GPU | Efficiency |
|---|---|---|---|
| 10 TFLOPS | 1.3 TFLOPS | — | |
| 600 TFLOPS | 75 TFLOPS | — | |
| 9,000 TFLOPS | 1,125 TFLOPS | — | |
| 18,000 TFLOPS | 2,250 TFLOPS | — | |
| 18,000 TFLOPS | 2,250 TFLOPS | — | |
| 36,000 TFLOPS | 4,500 TFLOPS | — | |
| 108,000 TFLOPS | 13,500 TFLOPS | — | |
| 1,500 TOPS | 188 TOPS | — | |
| FP6 | 36,000 TFLOPS | 4,500 TFLOPS | — |
Where a vendor states a basis, the figure shown is the dense one, and any figure it publishes is listed separately. Vendors commonly headline the sparse number instead: for NVIDIA's 2:4 structured sparsity that is exactly twice the dense figure, though other vendors' sparse modes do not all follow that ratio.
Powered by NVIDIA B300
This system utilizes 8 × NVIDIA B300 SXM 262GB GPUs, each delivering exceptional performance for AI and HPC workloads.
Per GPU TDP
1400W
Per GPU Memory
263 GB
Process Node
4nm
Architecture
Blackwell Ultra
Documentation & Resources
Flopper Spec Sheet
QCT QuantaGrid D75L-3U specifications, generated from our database. Printable.
Vendor product page
QCT QuantaGrid D75L-3U documentation
QCT QuantaGrid D75H-10U
QCT • Latest version
Typical Use Cases
The QCT QuantaGrid D75L-3U runs 8× B300 GPUs over 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, delivering 36,000 TFLOPS FP8 dense.