NVIDIA H200.
Built around bandwidth.
Complete H200 systems for memory-intensive AI and HPC. Specify HGX SXM with NVSwitch or a PCIe NVL platform with supported bridge groups.
HGX reference: Supermicro SYS-821GE-TNHR
SYS-821GE-TNHR reference chassis supports HGX H100/H200. The final quotation specifies H200 and the installed bill of materials.
Manufacturer reference imageThe full system, defined.
The HGX configuration references Supermicro’s SYS-821GE-TNHR, an 8U dual-Xeon system supporting eight H200 SXM GPUs. H200 NVL is a separate PCIe option; it uses a compatible PCIe chassis such as the SYS-521GE-TNRT and a different interconnect design.
| HGX reference platform | Supermicro SYS-821GE-TNHR, 8U, supporting HGX H100 / H200. The NexTec proposal specifies H200 SXM. |
|---|---|
| GPU baseboard | 8× H200 SXM with 141 GB HBM3e each; 1,128 GB aggregate. Up to 4.8 TB/s local memory bandwidth and 900 GB/s NVLink per GPU. |
| GPU fabric | HGX eight-GPU designs use NVLink and four NVSwitch devices. GPU fabric and external scale-out network are separate parts of the architecture. |
| Host compute | Dual 4th / 5th Gen Intel Xeon Scalable. CPU models, core count, TDP, and firmware are selected against the supported OEM list. |
| ECC memory | 32 DDR5 DIMM slots; up to 8 TB platform capacity. Actual speed depends on CPU, DIMM type and DIMMs per channel. |
| Boot / storage | 2× M.2 NVMe for boot. Up to 16 hot-swap 2.5-inch NVMe bays: 12 default, 4 optional; SATA configuration also available. |
| Fabric expansion | Eight PCIe 5.0 x16 low-profile slots, plus two FHHL slots and two optional FHHL slots. Select NIC count, GPU affinity, fabric, optics, and cabling as a complete design. |
| Power / facility | H200 SXM up to 700 W each: 5.6 kW across eight GPUs before the host and other components. Complete feed, PSU, cooling and rack requirements are confirmed for the ordered build. |
| NVL alternative | H200 NVL: 141 GB HBM3e, up to 600 W, PCIe 5.0 x16. Supported 2- or 4-GPU NVLink bridge groups; it is not the HGX eight-way switched fabric. |
| System acceptance | GPU and fabric health, PCIe/NVLink enumeration, memory and storage checks, sustained power/thermal behavior, representative training or inference, and documented firmware/software versions. |
SXM modules are HGX platform components, not standard PCIe add-in cards. NVL and SXM cannot be substituted in the same baseboard.
A chassis reference photo does not prove the installed GPU model. The gallery separately identifies the official HGX H200 baseboard.