NVIDIA Quantum-3 Q3400-RA XDR 800Gb/s InfiniBand Switch 144-Port 4U Managed Switch

A 4U air-cooled, managed InfiniBand switch built on the NVIDIA Quantum-3 switch ASIC. It delivers 144 XDR ports at 800Gb/s across 72 OSFP cages, with a maximum throughput of 115.2 Tb/s, making it suited to large-scale HPC and AI spine-layer fabrics.

The NVIDIA Quantum-X800 Q3400-RA is a fixed-configuration 4U InfiniBand switch based on the NVIDIA Quantum-3 switch ASIC. It is designed for high-performance computing and AI infrastructure where high radix, low latency, and predictable fabric behavior are priorities. The switch provides 144 XDR ports at 800Gb/s distributed across 72 Octal Small Form-Factor Pluggable (OSFP) cages, and it uses 200Gb/s-per-lane SerDes technology.

In a two-level fat-tree topology, the Q3400-RA can act as a spine switch and connect up to 10,368 ConnectX-8 network interface cards with minimal latency and optimized job locality. The platform supports Fat Tree, Dragonfly+, multi-dimensional Torus, and other network topologies. It also includes a dedicated InfiniBand in-band management port for NVIDIA Unified Fabric Manager (UFM), separated on the front panel from the data ports so that the full set of standard ports remains available for data network connectivity.

The Q3400-RA is managed, air-cooled, and ships with a tool-less rail kit. Optional router capabilities allow InfiniBand clusters to expand across multiple sites.

The Q3400-RA is built on the NVIDIA Quantum-3 switch ASIC, the same generation used across the Quantum-X800 family. It supports 200Gb/s-per-lane SerDes and provides the high radix needed for large spine layers in HPC and AI fabrics.

XDR is an InfiniBand data rate in which each lane of a 4X port runs at 200Gb/s with 64b/66b encoding, resulting in an effective bandwidth of 800Gb/s per port. The Q3400-RA supports 400Gb/s and 800Gb/s per port.

The 4U systems leverage NVIDIA Scalable Hierarchical Aggregation and Reduction Protocol (SHARP), along with enhanced adaptive routing and performance isolation technologies. These are intended to improve collective operation performance and fabric efficiency in HPC and AI environments.

The dedicated FNM port is a separate OSFP InfiniBand in-band management port. It enables access to the UFM platform for fabric monitoring and operation. On the Q3400 air-cooled planarized FNM port, one port is active at 400Gb/s on the FNM side.

The Q3400-RA supports 400Gb/s and 800Gb/s per port. It is part of the NVIDIA Quantum-X800 family and is intended for XDR InfiniBand fabrics. For integration with existing NDR or HDR infrastructures, NVIDIA positions the Q3200 2U air-cooled configuration as the compatible option. The Q3400-RA is a managed system and runs NVOS.

Transceiver and cable compatibility depends on the specific port configuration and FNM mode. Please confirm the exact transceiver SKU and cable type before ordering.

Hong Kong Starsurge Group Co., Limited provides network hardware, IT services, and system integration solutions for customers worldwide. For this product, Starsurge can support pre-sales specification review, configuration matching, and order coordination.

For tailored services, NVIDIA also provides on-site and remote service contacts. Please confirm the exact support scope with your sales representative before ordering.

The Q3400-RA is a 4U switch with 144 XDR ports over 72 OSFP cages and 115.2 Tb/s maximum throughput. The Q3200-RA is a 2U system that houses two independent switches in one enclosure, providing 72 XDR ports over 36 OSFP cages and 57.6 Tb/s maximum throughput. The 4U systems are typically used as spines, while the 2U systems serve as leaves.

The Q3400-RA supports 400Gb/s and 800Gb/s per port, which aligns with NDR and XDR rates. For integration with existing NDR or HDR infrastructures, NVIDIA positions the Q3200 2U air-cooled configuration as the ideal option. Please confirm the exact port configuration and connection mode before ordering.

The Q3400-RA has 8 replaceable power supplies and 10 replaceable fans. It uses 200-240Vac, 10A, 50/60Hz per PSU.

The Q3400-RA is a managed system and uses NVOS. NVOS supports configuration through NVUE. NVIDIA also provides the NVOS User Manual for InfiniBand Switches for detailed guidance.

Yes. NVIDIA Quantum-X800 switches feature optional router capabilities that facilitate expansion of InfiniBand clusters to support a large scale of nodes located across multiple sites. Please confirm the exact licensing and configuration requirements before ordering.

The Q3400-RA is shipped with the Q3400-RA tool-less rail kit, part number 930-9SKIT-00LO-00B, for a 700-800 mm rack depth range. It supports square post mounting holes only.

Hong Kong Starsurge Group Co., Limited is a technology-driven provider of network hardware, IT services, and system integration solutions. Founded in 2008, the company serves customers worldwide with products including network switches, NICs, wireless access points, controllers, cables, and related networking equipment.

Backed by an experienced sales and technical team, Starsurge supports industries such as government, healthcare, manufacturing, education, finance, and enterprise.

The company also offers IoT solutions, network management systems, custom software development, multilingual support, and global delivery. With a customer-first approach, Starsurge focuses on reliable quality, responsive service, and tailored solutions that help clients build efficient, scalable, and dependable network infrastructure.