NVIDIA QM9700 (Quantum-2)
64 × 400G in 1U. That is 25.6 Tb/s of switching through 32 OSFP cages.
- Logical ports64 × 400G
- Physical cages32 × OSFP
- Switching capacity25.6 Tb/s
- Rack units1U
- Typical power747 W
- Maximum power1,720 W
- Fabricinfiniband
- ASICNVIDIA Quantum-2
64 logical ports through 32 physical cages. Each cage carries a module terminating 2 links, so optic counts do not equal port counts. See optics compatibility.
Breakout
A port faster than the endpoint it serves can be broken out when the speeds divide cleanly. That raises the usable port count. Two-tier capacity goes as the square of the port count, so it moves the tier boundary a long way.
| Endpoint speed | Breakout | Usable ports |
|---|---|---|
| 400G | none | 64 |
| 200G | 2:1 | 128 |
| 100G | 4:1 | 256 |
Roles and optics
- Suitable for: compute, storage fabrics
- Cage type: OSFP. A module of any other form factor will not seat
- Accepted optic coding: nvidia, universal
- Management: Internally managed
- Part number:
MQM9700-NS2F
Coding matters more than it looks. A switch may refuse a transceiver that is not coded for it, and that is one of six axes that have to agree before a link comes up. The others are form factor, reach, fibre type, fibre connector and ferrule polish. See optics compatibility.
Notes
Internally managed (carries the subnet manager). 64x400G NDR in 32 OSFP cages, 1U. Verify against the current vendor datasheet before quoting.
Source: NVIDIA QM97x0 hardware user manual (networking-docs.nvidia.com/qm97x0hw/Specifications), verified 2026-08. Confirmed 2026-08-06