NVLink is no longer supported on the Ada Lovelace GPU architecture that powers Nvidia’s flagship RTX 4090 graphics. Replacing NVLink is the PCIe Gen 5 standard. Nvidia will use the freed up space from the removal of NVLink to cram in more AI processing capabilities.
https://www.windowscentral.com/hardware/computers-desktops/nvidia-kills-off-nvlink-on-rtx-4090#:~:text=NVLink is no longer supported,in more AI processing capabilities.
The RTX A6000 ADA also drops nvlink. No idea why the downvotes