---
格式版本: 2
标题: "NVLink & NVSwitch: Fastest HPC Data Center Platform | NVIDIA"
原文链接: "https://www.nvidia.com/en-eu/data-center/nvlink/"
发布日期: "2026-04-20"
发布时间校准状态: "found"
发布时间需复核: "否"
发布时间来源: "llm:local:original_meta_loose"
发布时间证据: "nv-pub-date: 2026-04-20T08:50:12.000Z"
发布时间校准原因: "元数据中nv-pub-date（2026-04-20）是发布日期的明确标识，且无更优先的发布时间来源。"
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发布时间原页读取状态: "原页面已读取"
发布时间未找到原因: ""
发布时间校准时间: "2026-07-24T21:18:03+08:00"
发布时间仲裁状态: "confirmed"
发布时间仲裁尝试次数: 1
发布时间仲裁耗时毫秒: 4696
发现时间: "2026-06-13T08:30:53+08:00"
入库时间: "2026-07-24T13:18:08.698Z"
来源平台: "Exa"
搜索渠道: "exa_search"
搜索词: "Nvlink"
匹配关键词:
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相关厂家:
  - "NVIDIA"
相关专家:
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内容类型: "网页"
抓取工具: "XCrawl Scrape"
清洗工具: "XCrawl Markdown + LLM 正文裁剪（重试成功）"
原始附件:
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AI优质: "是"
AI打分: 93
AI分档: "高置信优质"
AI质检状态: "通过"
AI打分理由: "NVIDIA官方页面详细介绍第六代NVLink及NVLink Switch规格、Vera Rubin NVL72机柜级架构，包含技术参数、商业部署案例，主题高度相关、权威且完整。"
AI质检模型: "deepseek-v4-flash"
AI质检时间: "2026-07-24T21:30:54+08:00"
AI主题相关性: 18
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AI新颖性: 15
AI技术细节: 20
AI商业部署信号: 15
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采集批次: "2026年6月13日8点30分29秒"
采集批次ID: "20260613-083029-484"
去重键: "https://www.nvidia.com/en-eu/data-center/nvlink"
---

# NVIDIA NVLink and NVLink Switch Scale-up networking fabric with high-bandwidth GPU-to-GPU communications for AI training, inference, and other demanding rack-scale GPU-accelerated workloads.
* Introduction
* NVLink
* NVLink Switch
* NVLink Fusion
* NVLink Switch Specifications
* Introduction
* Introduction
* NVLink
* NVLink Switch
* NVLink Fusion
* NVLink Switch Specifications
* Introduction
* NVLink
* NVLink Switch
* NVLink Fusion
* NVLink Switch Specifications

## The Need for a Faster Scale-Up Interconnect
Reaching the highest performance for the latest AI models requires seamless, high-throughput GPU-to-GPU communications across the entire server rack. With low latency, massive networking bandwidth, and all-to-all connectivity, the sixth generation NVIDIA NVLink™ and NVLink Switch are designed to accelerate training and inference for faster reasoning and agentic AI workloads.

## Maximize System Throughput and Uptime With NVIDIA NVLink
The sixth-generation NVLink enables 3.6 TB/s of bandwidth per GPU for the[ NVIDIA Rubin platform](https://www.nvidia.com/en-eu/data-center/technologies/rubin/)—2x more bandwidth than the previous generation and over 14x the bandwidth of PCIe Gen6. Rack-scale architectures like [NVIDIA Vera Rubin NVL72](https://www.nvidia.com/en-eu/data-center/vera-rubin-nvl72/) connect 72 GPUs in an all-to-all topology for a total of 260 TB/s, providing massive bandwidth for the all-to-all communications needed for training and inference of leading mixture-of-experts model architectures. NVLink 6 Switch also introduces new management and resiliency features designed to maximize system uptime, including control plane resilience, the ability to run with a partially populated rack, and hot-swapping of switch trays.

### NVLink At-Scale Performance
Sixth-generation NVIDIA NVLink in NVIDIA Rubin increases GPU-to-GPU communication bandwidth by 2x compared to the previous generation for faster training and inference with the latest AI model architectures.

## Raise Reasoning Throughput With NVLink Communications
### Fully Connect GPUs With NVIDIA NVLink and NVLink Switch
NVLink is a 3.6 TB/s bidirectional, direct GPU-to-GPU interconnect that scales multi-GPU input and output (IO) within a server. The NVIDIA NVLink Switch chips connect multiple NVLinks to provide all-to-all GPU communication at full NVLink speed across the entire rack. To enable high-speed, collective operations, each NVLink Switch has engines for NVIDIA Scalable Hierarchical Aggregation and Reduction Protocol (SHARP)™ for in-network reductions and multicast acceleration.
[ Learn More About NVLink and NVLink Switch ](https://developer.nvidia.com/blog/nvidia-nvlink-and-nvidia-nvswitch-supercharge-large-language-model-inference/)

### Accelerate Test-Time Reasoning for Trillion- Parameter Models With NVLink Switch System
With NVLink Switch, NVLink connections can be extended across nodes to create a seamless, high-bandwidth, multi-node GPU cluster—effectively forming a data-center-sized GPU. NVIDIA NVLink Switch enables 260 TB/s of GPU bandwidth in one NVIDIA Vera Rubin NVL72 for large model parallelism. Multi-server clusters with NVLink scale GPU communications in balance with the increased computing, so NVIDIA Vera Rubin NVL72 can support 9x the GPU count versus a single eight-GPU system.
[ Learn More About NVIDIA Vera Rubin NVL72 ](https://www.nvidia.com/en-eu/data-center/vera-rubin-nvl72/)

![NVIDIA NVLink Fusion](https://www.nvidia.com/content/dam/en-zz/Data-Center/nvlink/nvlink-fusion-bm-md460-offset-d.jpg)

## NVIDIA NVLink Fusion
NVIDIA NVLink™ Fusion delivers industry-leading AI scale-up and scale-out performance with NVIDIA technology plus semi-custom ASICs or CPUs, enabling hyperscalers to build an ASIC hybrid AI infrastructure with NVIDIA NVLink technology and rack-scale architecture.
[ Learn More ](https://www.nvidia.com/en-eu/data-center/nvlink-fusion/)

## Scaling From Enterprise to Exascale
### Full Connection for Unparalleled Performance
The NVLink Switch chip in Vera Rubin NVL72 enables 72 fully connected GPUs in a non-blocking compute fabric. The NVLink Switch interconnects every GPU pair at an incredible 3.6 TB/s. It supports full all-to-all communication. The 72 GPUs in Vera Rubin NVL72 can be used as a single high-performance accelerator with up to 3.6 exaFLOPS of AI compute power.

### The Most Powerful AI and HPC Platform
NVLink and NVLink Switch are essential building blocks of the complete NVIDIA data center solution that incorporates hardware, networking, software, libraries, and optimized AI models and applications from the NVIDIA AI Enterprise software suite and the NVIDIA NGC™ catalog. The most powerful end-to-end AI and HPC platform, it allows researchers to deliver real-world results and deploy solutions into production, driving unprecedented acceleration at every scale.

## Specifications
1. NVLink
2. NVLink Switch

| Fourth Generation | Fifth Generation | Sixth Generation
---|---|---
NVLink Bandwidth per GPU | 900GB/s | 1,800GB/s | 3,600 GB/s
Maximum Number of Links per GPU | 18 | 18 | 36
Supported NVIDIA Architectures | NVIDIA Hopper™ architecture | NVIDIA Blackwell architecture | NVIDIA Rubin Platform

| NVLink 4 Switch | NVLink 5 Switch | NVLink 6 Switch
---|---|---
NVLink GPU Domains | 8 | 8 |72 | 8 |72
NVLink Switch GPU-to-GPU Bandwidth | 900 GB/s | 1,800 GB/s | 3,600 GB/s
Total Aggregate Bandwidth | 7.2 TB/s | 130 TB/s (NVL72) | 260 TB/s (NVL72)
Supported NVIDIA Architectures | NVIDIA Hopper™ architecture | NVIDIA Blackwell architecture | NVIDIA Rubin Platform
Preliminary specifications; may be subject to change.

### NVIDIA Blackwell Ultra Delivers up to 50x Better Performance and 35x Lower Cost for Agentic AI
Built to accelerate the next generation of agentic AI, NVIDIA Blackwell Ultra delivers breakthrough inference performance with dramatically lower cost. Cloud providers such as Microsoft, CoreWeave, and Oracle Cloud Infrastructure are deploying NVIDIA GB300 NVL72 systems at scale for low-latency and long-context use cases, such as agentic coding and coding assistants. This is enabled by deep co-design across NVIDIA Blackwell, NVLink™, and NVLink Switch for scale-out; NVFP4 for low-precision accuracy; and NVIDIA Dynamo and TensorRT™ LLM for speed and flexibility—as well as development with community frameworks SGLang, v…