NVLink
NVLink is a high-speed bus from Nvidia that was developed for data transport between GPU nodes and CPUs , for example in the area of high-performance workstations and rack-based supercomputers . In newer computer systems it also replaces the SLI system for the direct connection of graphics cards .
The following table provides an overview of the data rate over a single link connection in one direction. Depending on the semiconductor and circuit board design, several such links can be available and also bundled.
| Interconnect | Transfer rate |
Data rate per lane and direction |
Lanes per link |
Data rate per direction |
Left (chip) | Data rate (cumulative) |
|---|---|---|---|---|---|---|
| NVLink 1.0 | 20 GT / s | ~ 2.5 GB / s | 8th | 20 GB / s | 4 (Pascal) | 160 GB / s |
| NVLink 2.0 | 25 GT / s | ~ 3,125 GB / s | 8th | 25 GB / s | 6 (volta) | 300 GB / s |
| NVLink 3.0 | 25 GT / s | ~ 3,125 GB / s | 8th | 25 GB / s | 12 (amps) | 600 GB / s |
Individual evidence
- ↑ NVLINK-FABRIC. Retrieved August 20, 2019 .
- ↑ Multi-GPU in games: 2 × 16 PCIe lanes and NVLink do not save SLI either. March 29, 2019, accessed August 20, 2019 .