HPE ProLiant Compute XD685 (HGX B200)
The eight-way XD685 in its NVIDIA HGX B200 configuration, liquid cooled only, in the 5U DLC chassis S4R96A. HPE names B200 support twice in the QuickSpecs, in the supported-accelerator list and in the rule that the H200 and B200 liquid-cooled accelerators must be paired with this chassis, so the configuration is not in doubt. The accelerator kit part number is not recorded: the accelerator table lists two entries both described as HGX B300 with different part numbers, one of which is likely the B200 mislabelled, and guessing which would put an unverified number on a row buyers may quote. Two fifth-generation AMD EPYC processors, 24 DIMM slots and up to 6 TB of DDR5-6400. HPE publishes no system power draw, only twelve 3,000 W supplies, so nothing is summed; compute is NVIDIA's for the baseboard.
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Systems built on this design
9 configurationsBuilt on the NVIDIA HGX B200 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 |
|---|---|---|---|
| 296 TFLOPS | 37 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 | — | |
| 72,000 TFLOPS | 9,000 TFLOPS | — | |
| 36,000 TOPS | 4,500 TOPS | — |
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 B200
This system utilizes 8 × NVIDIA B200 SXM 180GB GPUs, each delivering exceptional performance for AI and HPC workloads.
Per GPU TDP
1000W
Per GPU Memory
180 GB
Process Node
4nm
Architecture
Blackwell
Frequently asked questions
How much does the ProLiant Compute XD685 (HGX B200) cost?
HPE sells the ProLiant Compute XD685 (HGX B200) on quote through OEMs and resellers, and nobody rents a whole one by the hour. Renting its 8 B200 accelerators separately at the cheapest live rate Flopper tracks, $4.09 per GPU-hour across 15 providers, comes to about $32.72 an hour for the equivalent capacity. B200 rental prices →
How much power does the ProLiant Compute XD685 (HGX B200) require?
HPE has not published a power figure for the ProLiant Compute XD685 (HGX B200), and Flopper does not derive one from the accelerator count because the rest of the system draws power too.
How many GPUs are in the ProLiant Compute XD685 (HGX B200)?
8. The ProLiant Compute XD685 (HGX B200) carries 8 NVIDIA B200 SXM 180GB accelerators in a rack form factor, and every throughput figure on this page is the total across them. B200 specifications →
Documentation & Resources
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Flopper Spec Sheet
HPE ProLiant Compute XD685 (HGX B200) specifications, generated from our database. Printable.
Vendor product page
HPE ProLiant Compute XD685 (HGX B200) documentation
HPE Compute XD690 QuickSpecs (a50009220enw, V6)
HPE • 2026-07-06
Typical Use Cases
The HPE ProLiant Compute XD685 (HGX B200) runs 8× B200 GPUs over NVLink 5.0 / NVSwitch 4.0 across the HGX B200 baseboard; 4x FHHL PCIe Gen5 x16 slots for fabric, NIC or DPU, delivering 36,000 TFLOPS FP8 dense.