# NVIDIA NVLink-C2C

Extending NVLink to chip-level integration.

[Read Press Release](https://nvidianews.nvidia.com/news/nvidia-opens-nvlink-for-custom-silicon-integration)

## Ultra-Fast Chip Interconnect Technology for Custom Silicon Integration

NVIDIA NVLink™-C2C extends the industry-leading NVLink technology to a chip-to-chip interconnect. This enables the creation of a new class of integrated products with NVIDIA partners, built via chiplets, allowing NVIDIA GPUs or CPUs to have a high-bandwidth, coherent connection with custom silicon.

## Building Semi-Custom Chip Designs

The design and layout of a chip-to-chip interconnect is vital to proper function, performance, power efficiency, reliability, and fabrication yield. NVIDIA NVLink-C2C is built on world-class SerDes and Link design technology. With advanced packaging, NVLink-C2C interconnect delivers up to 6x more energy efficiency and 3.5x more area efficiency than a PCIe Gen 6 PHY on NVIDIA chips. NVLink-C2C is extensible from PCB-level integration, multi-chip modules (MCM), and silicon interposer or wafer-level connections, enabling the industry’s highest bandwidth, while optimizing for both energy and area efficiency. Through [NVLink Fusion,](https://www.nvidia.com/en-us/data-center/nvlink-fusion.md) the NVLink-C2C technology will be available for customers and partners who want to create semi-custom system designs.

## Products Using NVLink-C2C

### NVIDIA Vera Rubin NVL72

The NVIDIA Vera Rubin Superchip combines two NVIDIA Rubin GPUs and an NVIDIA Vera CPU connected over NVLink-C2C. It can scale up to the Vera Rubin NVL72, a massive 72-GPU system connected by NVIDIA NVLink.

[Learn More](https://www.nvidia.com/en-us/data-center/vera-rubin-nvl72.md)

### NVIDIA GB300 NVL72

NVIDIA's GB300 NVL72 integrates 72 NVIDIA Blackwell Ultra GPUs and 36 NVIDIA Grace™ CPUs, offering a 50x increase in AI factory output with optimized inference capabilities.

[Learn More](https://www.nvidia.com/en-us/data-center/gb300-nvl72.md)

### NVIDIA GB200 NVL72

The NVIDIA GB200 Superchip combines two NVIDIA Blackwell GPUs and an NVIDIA Grace CPU connected over NVLink-C2C. It can scale up to the GB200 NVL72, a massive 72-GPU system connected by NVIDIA NVLink.

[Learn More](https://www.nvidia.com/en-us/data-center/gb200-nvl72.md)

### NVIDIA Grace CPU Superchip

NVIDIA Grace CPU Superchip uses the NVLink-C2C technology to deliver 144 cores and 1 TB/s of memory bandwidth for cloud, enterprise, and high-performance computing.

[Learn More](https://www.nvidia.com/en-us/data-center/grace-cpu-superchip.md)

### NVIDIA DGX Spark

NVIDIA DGX Spark is a compact, personal AI supercomputer accelerated by the NVIDIA GB10 Grace Blackwell Superchip, delivering high-performance AI capabilities and support for models up to 200 billion parameters.

[Learn More](https://www.nvidia.com/en-us/products/workstations/dgx-spark.md)

### 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-us/data-center/nvlink-fusion.md)

### NVLink-C2C Benefits

### High Bandwidth

Supports high-bandwidth, coherent data transfers between processors and accelerators.

### Low Latency

Supports atomics between processors and accelerators to perform fast synchronization and high-frequency updates to shared data.

### Low-Power High Density

Uses advanced packaging to deliver 6x more energy efficiency and 3.5x more area efficiency than PCIe Gen 6 PHY on NVIDIA chips.

### Industry Standards

Supports Arm’s AMBA CHI (Coherent Hub Interface) or Compute Express Link (CXL) industry standard protocols for interoperability between devices.

Learn more about NVIDIA NVLink.

[Learn More](https://www.nvidia.com/en-us/data-center/nvlink.md)

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