HPE ProLiant Compute XD685 (HGX H200) vs Supermicro GPU SuperServer SYS-821GE-TNHR
Both are built on the NVIDIA HGX H200 baseboard, so their accelerator performance is identical rather than merely similar. The choice between them is chassis, cooling, expansion and supplier, not FLOPS.
What actually differs
| Specification | HPE ProLiant Compute XD685 (HGX H200) | Supermicro GPU SuperServer SYS-821GE-TNHR |
|---|---|---|
| Vendor | HPE | Supermicro |
| Part number | — | SYS-821GE-TNHR |
| Form factor | rack | rack |
| Released | 2025 | 2024 |
| Accelerator | 8x H200 | 8x H200 |
| Aggregate memory | 1.1 TB | 1.1 TB |
| Aggregate bandwidth | 38.4 TB/s | 38.4 TB/s |
| System power | — | — |
| Interconnect | NVLink 4.0 / NVSwitch 3.0 across the HGX H200 baseboard; 4x FHHL PCIe Gen5 x16 slots for fabric, NIC or DPU | NVSwitch + NVLink |
Rows shown in grey are identical between the two.
HPE ProLiant Compute XD685 (HGX H200)
The eight-way XD685 in its NVIDIA HGX H200 configuration, the only one of the four HPE offers in both air-cooled and liquid-cooled form: 6U for air with accelerator kit S3P89A, 5U for direct liquid cooling with S4X53A. Two fifth-generation AMD EPYC processors drive it, from 32 to 96 cores and 280 to 400 W, across 24 DIMM slots with twelve channels per socket and up to 6 TB of DDR5-6400. Storage is eight EDSFF NVMe E3.S drives, or twelve with a storage controller, plus RAID-1 M.2 boot. No chassis part number is recorded because two apply depending on cooling, S4Q28A for air and S4R96A for liquid. HPE publishes no system power draw for the XD685, only twelve 3,000 W Titanium supplies with ten deployable, so nothing is summed here; the compute figures are NVIDIA's for the HGX H200 baseboard rather than an HPE claim.
Vendor product pageSupermicro GPU SuperServer SYS-821GE-TNHR
8U GPU SuperServer built on the NVIDIA HGX H200 baseboard with 4x NVSwitch. Two Intel Xeon Scalable sockets (4th or 5th Gen, up to 64 cores each at 350W, air-cooled), 32 DIMM slots to an 8 TB maximum of DDR5-5600 ECC RDIMM, 19 front hot-swap 2.5-inch NVMe/SATA bays plus two M.2 NVMe boot slots, and 8x PCIe Gen5 x16 low-profile slots with 2x FHHL. Also sold in an HGX H100 configuration. System-level power draw is not published.
Vendor product page