NVIDIA Quantum Switch-IB SB7700
The NVIDIA Mellanox Switch-IB SB7700 is a 1U managed EDR InfiniBand switch delivering 36 ports of 100 Gb/s InfiniBand QSFP28. Providing 7.2 Tbps of non-blocking throughput with 90 nanoseconds cut-through latency, the SB7700 integrates an embedded Subnet Manager for autonomous fabric control. Widely deployed in high-performance computing clusters and financial modeling fabrics, the SB7700 is an actively traded asset on secondary markets for budget-conscious HPC installations.
Specifications
| Brand | NVIDIA |
|---|---|
| Family | Quantum |
| Form factor | 1U fixed switch |
| Released | Nov 2014 |
| End of sale | Mar 2021 |
| End of support | Mar 2026 |
| Ports | 36x 100 Gb/s EDR InfiniBand QSFP28 ports |
| Switching capacity | 7.2 Tbps aggregate non-blocking switching throughput |
| Latency | 90 nanoseconds port-to-port cut-through latency |
| Management | Internally managed with embedded Subnet Manager running on onboard CPU |
| Power supplies | Dual redundant hot-swappable AC or DC power supplies |
Generations
- Next generation: NVIDIA Quantum QM8700
Compatible parts
Cables
MCP1600-E003E30 NVIDIA 100GbE QSFP28 Direct Attach Copper Cable 3m
MFS1S00-E003E NVIDIA Mellanox 100Gb/s EDR QSFP28 Active Optical Cable 3m
Transceivers
MMA1L10-CR NVIDIA Mellanox 100GbE QSFP28 SR4 Optical Transceiver
MMA1L30-CM NVIDIA Mellanox 100GbE QSFP28 CWDM4 Optical Transceiver
Works together
How the NVIDIA Quantum Switch-IB SB7700 connects to servers, storage and the network: 1 way, with the parts and products on each path.
GPU cluster fabric
InfiniBand adapters and switches must match the generation: HDR is 200Gb, NDR is 400Gb. VPI adapters such as ConnectX-6 and ConnectX-7 can run either InfiniBand or Ethernet.
Servers
HPE ProLiant DL580 Gen10 4U rack
HPE ProLiant ML350 Gen10 4U tower
HPE ProLiant XL675d Gen10 Plus 6U chassis (HPE Apollo d6500 Gen10 Plus), one XL675d per chassis
HPE Apollo 6500 Gen10 4U rack
HPE Apollo 6500 Gen10 Plus 4U rack
Lenovo ThinkSystem SD650-N V2 dense node
GPUs
NVIDIA Data Center GPU T4 PCIe low-profile half-height half-length
NVIDIA Data Center GPU Tesla V100 SXM2 32GB SXM2 module
NVIDIA Data Center GPU A100 SXM4 80GB SXM4 module
NVIDIA Data Center GPU A40 PCIe 4.0 dual-slot full-height full-length
Adapters for the server
MCX556A-ECAT NVIDIA ConnectX-5 VPI Dual-Port 100Gb/s EDR InfiniBand and 100GbE QSFP28 PCIe 3.0 x16 Adapter
MCX75310AAS-NEAT NVIDIA ConnectX-7 Single-Port 400Gb/s NDR InfiniBand and 400GbE OSFP PCIe 5.0 x16 Adapter
MCX755106AS-HEAT NVIDIA ConnectX-7 Dual-Port 200Gb/s NDR200 InfiniBand and 200GbE QSFP112 PCIe 5.0 x16 Adapter
540-BCVE Dell NVIDIA Mellanox ConnectX-6 VPI Single Port 200Gb/s HDR InfiniBand / 200GbE PCIe Adapter
Plan and size it
- Draw this setup in the topology planner mrplanb.com
- Tokens per kWh calculator for GPU racks rack-density.com
- Add up rack power and space rack-density.com
- Power, cooling and racks for dense GPU servers mrplanb.com
- Network monitoring tools compared mrplanb.com
Check compatibility with NVIDIA
Before you buy, confirm the exact configuration against the vendor's own lists: firmware levels, operating systems, adapters and optics that NVIDIA has tested with the NVIDIA Quantum Switch-IB SB7700.
- Compatibility NVIDIA Qualified System Catalog (certified GPU servers)
- Specifications NVIDIA Networking documentation (adapters, switches, cables)
- Support NVIDIA Enterprise Support
FAQ
Does the SB7700 require an external Subnet Manager?
No, the SB7700 is an internally managed switch with an embedded Subnet Manager supporting up to 2,000 nodes.
Can the SB7700 accept standard copper DAC cables?
Yes, it supports standard passive and active copper EDR QSFP28 cables as well as optical transceivers.
Buying or selling Switch-IB SB7700?
New, refurbished or used. Tell us the quantity and condition and we connect you with a vetted reseller in your region, usually within one working day.
Sources
- NVIDIA Switch-IB SB7700 Product Overview, checked 2026-10-27
- NVIDIA Switch-IB SB7700 Datasheet, checked 2026-10-27