The only real similarity to PCIe is that they're both high-speed differential signaling standards. This article has a good overview of what is known: http://ww

The only real similarity to PCIe is that they're both high-speed differential signaling standards. This article has a good overview of what is known: http://www.anandtech.com/show/7900/nvidia-updates-gpu-roadmap-unveils-pascal-architecture-for-2016 http://www.anandtech.com/show/7900/nvidia-updates-gpu-roadma... . For an example of what the signaling might look like, see https://research.nvidia.com/publication/054-pjb-20-gbs-ground-referenced-single-ended-short-reach-serial-link-28-nm-cmos https://research.nvidia.com/publication/054-pjb-20-gbs-groun...