NVIDIA ® NVLink ™ is the world's first high-speed GPU interconnect offering a significantly faster alternative for multi-GPU systems than traditional PCIe-based solutions. Connecting two NVIDIA ® graphics cards with NVLink enables scaling of memory and performance 1 to meet the demands of your largest visual computing workloads.

NVLink is a 1.8TB/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 within a single rack and between racks.

NVLink is developed by Nvidia for data and control code transfers in processor systems between CPUs and GPUs and solely between GPUs. NVLink specifies a point-to-point connection with data rates of 20, 25 and 50 Gbit/s (v1.0/v2.0/v3.0+ resp.) per differential pair.

2023年3月6日 · NVLink is a high-speed connection for GPUs and CPUs formed by a robust software protocol, typically riding on multiple pairs of wires printed on a computer board. It lets processors send and receive data from shared pools of memory at lightning speed.

2025年3月11日 · If you want the technical definition, NVLink is a wire-based communications protocol serial multi-lane short-range communication link. In simple terms, it’s a method of utilizing two graphics cards as one for a significant boost in performance.

NVLink is a high-speed interconnect technology developed by NVIDIA to improve data transfer between GPUs and CPUs. It addresses the limitations of the PCI Express (PCIe) interface in high-performance computing applications by providing a faster pathway with lower latency.

2-GPU-NVLink provides a fast NVLink interconnect between the two GPUs, bonding together all four of the NVLink interconnection points for a total peak bandwidth of 80 GB/s (64 GB/s effective) per direction between them.

2014年11月14日 · NVLink is an energy-efficient, high-bandwidth path between the GPU and the CPU at data rates of at least 80 gigabytes per second, or at least 5 times that of the current PCIe Gen3 x16, delivering faster application performance.

2024年6月20日 · High-performance computing is a dynamic field, with Nvidia NVLink representing one of the most important GPU scalability and speed breakthroughs. Here, we will explain exactly what Nvidia NVLink is about, including everything from its architecture to benefits and use cases.

Unlocking the full potential of accelerated computing requires seamless communication between every GPU. The fifth-generation of NVIDIA NVLink™ is a scale–up interconnect that unleashes accelerated performance for AI reasoning models..