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Nvidia Scale AI & HPC with QM9790-NS2R – 400G C2P InfiniBand Switch
The NVIDIA Quantum-2 QM9790-NS2R delivers 64 ports of 400Gb/s InfiniBand in a 1U chassis with connector-to-power (C2P) airflow, enabling extreme-scale AI and HPC clusters in data centers where reverse airflow is required. Designed for external management with NVIDIA UFM, it streamlines operations while supporting Fat Tree, DragonFly+, and Torus topologies.
Product Overview
The QM9790-NS2R is an unmanaged (externally managed) 400Gb/s InfiniBand fixed-configuration switch from the NVIDIA Quantum-2 series, featuring connector-to-power (C2P) airflow for flexible rack integration. It provides 32 OSFP ports, each capable of 400Gb/s (or 128 ports at 200Gb/s with port-split technology), and offers an aggregate bidirectional throughput of 51.2 Tb/s. With support for NVIDIA SHARPv3, RDMA, adaptive routing, and advanced congestion control, the QM9790-NS2R is built for the most demanding HPC, AI, and enterprise workloads.
Backward compatible with previous InfiniBand generations
Technology: NVIDIA Quantum-2 Architecture
The Quantum-2 platform integrates the third-generation SHARP technology (SHARPv3), enabling in-network data aggregation that reduces data movement and accelerates AI training and HPC simulations. Combined with Remote Direct Memory Access (RDMA) and NVIDIA's Scalable Hierarchical Aggregation and Reduction Protocol, the QM9790-NS2R dramatically improves application performance while data traverses the fabric.
Typical Deployments
AI & Machine Learning clusters - large-scale GPU-accelerated training with SHARPv3
High-performance computing (HPC) - research simulations, weather modeling, and genomics
Data center spine-leaf - 400G InfiniBand fabrics for low-latency storage and compute
Enterprise & cloud - scalable, multi-tenant networks with UFM management
Government & education - research labs and supercomputing centres
Compatibility
Component / Ecosystem
Support
InfiniBand Speed
NDR 400Gb/s, backward compatible with HDR, EDR, FDR
Cabling
Passive/active copper or active fiber; OSFP connectors
Confirm airflow direction (C2P) matches your data center hot-aisle/cold-aisle layout - this is a reverse airflow model
Plan for external management - ensure UFM licenses and server infrastructure are ready
Validate power input (200-240Vac) and redundancy requirements
Check OSFP cable lengths and types (copper/fiber) for your rack distances
Request extended warranty or on-site support if needed for mission-critical deployment
About Hong Kong Starsurge Group
Founded in 2008, Hong Kong Starsurge Group Co., Limited is a technology-driven provider of network hardware, IT services, and system integration solutions. With an experienced sales and technical team, we serve industries including government, healthcare, manufacturing, education, finance, and enterprise. Starsurge offers IoT solutions, network management systems, custom software development, multilingual support, and global delivery.
Hong Kong Starsurge Group Co.
Leading IT Solutions Provider & System Integrator Since Establishment
Hong Kong Starsurge Group Co. is a technology-driven enterprise specializing in IT network system integration, IoT solutions, and custom software development. With extensive industry expertise ac...
Hong Kong Starsurge Group Co.
Leading IT Solutions Provider & System Integrator Since Establishment
Hong Kong Starsurge Group Co. is a technology-driven enterprise specializing in IT network system integration, IoT solutions, and custom software development. With extensive industry expertise ac...
