Specifications
MPN
TCS-SM-AS8126GS-NB3RT
Model
AS-8126GS-NB3RT
Form Factor
8U rackmount (CSE-GP807TS chassis)
GPU
NVIDIA HGX B300 8-GPU NVL8, 2,304 GB HBM3e per system
GPU Interconnect
5th Gen NVLink + NVSwitch, 1.8 TB/s per GPU
CPU
2x AMD EPYC 9005/9004 Series, up to 500 W TDP
Memory
24 DIMM slots, up to 6 TB DDR5-6400
Storage
8x hot-swap E1.S NVMe + 2x M.2 NVMe boot
Networking
8x NVIDIA ConnectX-8 SuperNIC, up to 800 Gb/s
DPU
Up to 2x dual-port NVIDIA BlueField-3
Motherboard
Super H14DSG-OM
Dimensions
356 x 449 x 950 mm (H x W x D)
Weight
263 lb (119 kg) net / 302 lb (137 kg) gross
Cooling
Air cooled, 6x heavy-duty fans
HGX B300 NVL8 platform comparison
| System | Height | GPU | HBM3e per system | CPU |
|---|---|---|---|---|
| Supermicro AS-8126GS-NB3RT | 8U | NVIDIA HGX B300 NVL8 | 2,304 GB | 2x AMD EPYC 9005/9004 |
| Supermicro AS-4126GS-NMR-LCC | 4U | NVIDIA HGX B300 NVL8 (liquid) | 2,304 GB | 2x AMD EPYC 9005/9004 |
| NVIDIA DGX B300 | 8U | 8x B300 | 2,304 GB | 2x Intel Xeon 6 |
Use Case
The AS-8126GS-NB3RT packages the NVIDIA HGX B300 8-GPU baseboard into a dual-AMD EPYC 8U chassis. The B300 module carries 288 GB of HBM3e per GPU, so one system presents 2.3 TB of GPU memory and 1.8 TB/s of NVLink bandwidth per accelerator across the NVSwitch fabric — enough headroom for very long context windows and mixture-of-experts inference without sharding. On the host side, 24 DIMM slots at DDR5-6400 carry up to 6 TB, and eight ConnectX-8 SuperNICs at up to 800 Gb/s per port give the scale-out fabric needed to link multiple systems into a training cluster. The liquid-cooled sibling for denser racks is the AS-4126GS-NMR-LCC.
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